78EKG-1

Sr. No. 2

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS- I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. A vessel in- your Company's fleet suffered, damage during a canal transit due to a electrical telegraph breakdown during manoeuvring. The Superintendent Engineer has instructed you to examine the vessel's telegraph. Write a report giving the results of your examination.

2. With reference to fire and explosions in marine practice, describe generally and discuss the purpose of any three of the following: -

(a) Pressure-vacuum valves and system piping on oil tankers.

(b) Photo-electric smoke detecting units.

(d) International shore connection.

3. Explain why mild steel is used extensively in marine machinery enumerating the physical properties, which influence its choice. State the maximum allowable, working stress for different applications and, discuss the types of failure, which can occur.

4. Seawater pumps operating at constant speed discharge into a ring main for cooling auxiliary machinery. Describe a method using pneumatic controls to keep the ring main pressure constant.

5. Describe the oil separator equipment, which may be installed in a vessel to comply with the MARPOL 73/78 Convention. Discuss generally a Chief Engineer's duties regarding this Convention and the instructions, which should be given to the engine department staff.

6. Discuss the tests which should be made regarding the operation of: -

(a) low pressure alarms on refrigeration Compressor,

(b) low and high level alarms on aux boiler,

(d) safety valves on boilers,

(e) over-speed governors on auxiliary engines,

(f) continuous recording salinity indicators on Fresh water generator,

(g) CO₂ smothering gas system discharge warning devices.

7. Briefly describe three types of filter that might be used in connection with a lubricating-oil circulating system. State the use of each particular type of filter and where in the system you would expect to find them.

8. Sketch and describe the oil fuel filling, relief, and overflow arrangements for a medium sized ship in which the oil is carried in both side bunkers and double bottom tanks.

Recommend a bunkering procedure for this arrangement.

9. State the causes of -

(a) a gradual increase,

(b) a gradual decrease,

In freshwater consumption for machinery space purposes.

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78EKG-1

Sr. No. 10

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS- I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. Give two reasons for sludge formation in main lubricating oil systems. Explain how bearing metal is attacked with particular reference to incompatibility between the oil and metal. Explain the role of additives. Discuss the problems associated with the use of a multi-purpose lubricating oil.

2. Explain the necessity of intercoolers on a multi-stage compressor. What attention is required to keep them safe and in good working order? Sketch and describe an intercooler suitable for a high pressure compressor and state materials used.

3. Discuss the merits and demerits of shell and pad shaft bearings. How is shafting alignment checked. What is the effect of tailshaft weardown on the adjacent shaft bearings.

4. How is the position of the engine fixed in a ship? How is the engine aligned? How is the engine secured to floors or tanktop. (sketch method).

5. Describe and sketch an axial flow pump. Explain it's principle of operation. State what important advantage and serious disadvantage it possesses compared to other pumps. Explain the effects of throttling either the suction or discharge valve.

6. What is meant by the "flash point of oil? How is it obtained? What are the approximate closed flash points of the following fuels:

(A) diesel oil

(B) bunker oil

(D) gasoline

7. With reference to multitubular heat exchangers explain:

(A) how and where impingement attack is likely to occur in the tubes

(B) Why is it desirable that coolant flow rate should not exceed that required to maintain correct fluid temperature

(D) partial obstruction of tube bore is a common cause of tube failure

8. Discuss the merits and demerits of employing either a soluble oil or a chromate solution as a corrosion inhibitor in the cooling system of a diesel engine.

9. Give composition of boiler scale. If you had to use potable drinking water in the boiler in an emergency, explain what steps would be required to maintain a reasonable level of impurities. What level of impurities would you try to maintain?

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78EKG-1

Sr. No. 9

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS- I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. How is the efficiency of an air compressor affected by the following:

(A) excessive clearance volume

(B) insufficient cooling water

2. Explain how the ingress of sea water is prevented in an oil lubricated stern bearing system. Should the system fail, describe the corrective action possible whilst the vessel is afloat. State why two stern bearing oil header tanks are fitted in some instances?

3. With reference to main shaft bearings which are excessively loaded or very lightly loaded state for each condition what are the:

(A) indications of the fault

(B) effects on adjacent bearings

Explain why load distribution on main shaft bearings changes in service.

4. Give a reasoned opinion as to the accuracy of the following statements:

(A) the effectiveness of a main thrust block is only as good as its seating arrangements

(B) pivoted pads are not necessary in thrust bearing design

5. Sketch and describe a stockless anchor illustrating the method or device used to attach it to the chain cable. When the anchor and cable are ranged during the ships underwater survey, what parts require special attention and what defects are likely to be discovered?

6. What is meant by the term "closed flashpoint" of an oil? Describe a test to determine its value. State any factors that limit the temperature of heating for marine fuels. Give the approximate closed flashpoint of:

(A) petrol (gasoline)

(B) paraffin

7. With reference to a tubular heat exchanger:

(A) why is ferrous sulphide being used in place of impressed current

(B) where are TEFLON inserts being used

8. Discuss recent developments in the protection of the hull from the effects of corrosion. Discuss the advantages and disadvantages of various types of hull cleaning procedures indicating your position with respect to the merits or demerits of cleaning the hull while the vessel is afloat.

9. Describe how you would test boiler water for:

(A) alkalinity

(B) chlorides.

State the values obtained from the tests that would be considered suitable for a water tube boiler. If the test results were unsatisfactory, what remedial action would you take?

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78EKG-1

Sr. No. 8

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS- I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. The vessel on which you are serving as Chief Engineer develops an oil leak from the stern tube aft oil seal whilst on voyage. Write a letter to the owners of the vessel regarding the incident, describing the temporary emergency measures taken to stop the oil leak. Also supply the owners with information about the cause of the oil leak and the action taken in dry dock to rectify it.

2. (a) Sketch a diagrammatic arrangement of a fully automatic refrigeration system which supplies a number of cold compartments.

(b) Describe the operation of the system sketched in Q.2 (a).

3. With reference to an air operated fuel oil control valve for an auxiliary boiler combustion system:

(a) sketch the valve, labeling the component parts;

(b) state the effect of air supply failure;

(d) state the factors which require a positioner to be fitted.

4. (a) Sketch and describe TWO methods that employ manometric means for measuring tank contents.

(b) State what corrections are made to the readings obtained by the methods described in A.4 (a) in

order to gauge the mass contents.

(c) Explain how bunkering requirements may be estimated when no records of main engine fuel consumption are available on board.

5. Describe with the aid of a sketch, the hydraulic operating circuit for a controllable pitch propeller.

6. With reference to shaft alignment:

(a) Explain the meaning of fair curve or rational alignment;

(b) Shaft alignment is often verified by the use of hydraulic jacks to obtain a simple graph. Sketch such a graph, indicating the following:

(i) Static load;

(ii) Hysteresis;

(iii) Influence number;

7. (a) Describe with the aid of simple diagrams:

(i) Osmosis:

(ii) Reverse osmosis.

(a) Explain TWO advantages and TWO disadvantages of producing fresh water by reverse osmosis.

(b) State the pre-treatment and post-treatment required during the reverse osmosis process for the production of potable water.

8. With reference to chemical tankers:

(a) Sketch a suitable cargo pumping and stripping system, labelling the component parts and indicating the direction of fluid flow;

(b) State the requirements of the regulations evolved to reduce pollution of the sea by chemical tanker cargoes.

9. (a) State what is meant by machinery condition monitoring.

(b) Describe how typical shipboard condition monitoring is carried out.

trends.

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78EKG-1

Sr. No. 7

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS- I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. State what are the differences in operation of speed-sensing and load-sensing and why it is desirable to fit load-sensing governors in some instances.

2. (a) Explain the role of the Safety Officer in relation to the Ships Safety Committee.

(b) Outline the specific duties of the officer on board ship.

3. With reference to plate heat exchangers explain how:

(a) A plate pack can be uprated by as much as 30 per cent,

(b) Parallel and contra flow is achieved.

4. Define the meaning and importance of two of the following terms in relating to lubricating oils:

(a) Viscosity index,

(b) Oxidation inhibitors,

(d) Extreme pressure additives,

(e) Foam stability.

5. Give three advantages that non-destructive testing has over destructive testing of materials

Describe briefly any non-destructive technique applicable for 'in depth' investigation.

Suggest with reasons an instance where non-destructive testing would find ready application in marine engineering.

6. Describe with sketches how the 'push-up' of a keyless propeller is carried out dry.

Describe how the propeller is released from the shaft.

7. Sketch a swash plate pump having an infinitely variable pumping characteristic.

Explain how it operates.

State why a centrifugal pump in which discharge is controlled by a valve cannot be considered as possessing such a characteristic.

8. (a) Give reasons why multi additive and synthetic lubricants should not normally be passed through centrifuges.

(b) State why centrifuge clutch slip should receive immediate attention for reasons other than overheating.

9. Give three reasons why the performance of ship's stores refrigeration units tend to 'fall off' in service.

10. Identify three different corrosion problems encountered in ship structure.

Define the origins and significance of each.

State what precautions are taken to reduce their effects.

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78EKG-1

Sr. No. 6

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS- I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. Describe with sketches, devices giving audible and visual alarms under the following conditions:

A. Burst fuel pipes,

B. Stoppage of main coolant pump,

C. High bilge level,

D. Overheated bearing in main machinery.

State what is the method and frequency of equipment testing and the power source used to ensure unfailing operation at all times.

2. Identify three different corrosion problems encountered in ship structure.

Define the origins and significance of each.

State what precautions are taken to reduce their effects.

3. A. Define the responsibilities of Chief Engineers immediately prior to dry docking, whilst the dock is dry, immediately prior to and after flooding and leaving dock.

B. Draft a list of standing orders to the engine department for the period that the vessel is on the blocks.

4. Identify with reasons which one or combination of the following details contribute most to heat transfer in multiplate heat exchangers:

A. Plate relief pattern,

B. Pack size,

C. Pressure differential across plate thickness,

D. Gasket thickness.

5. Give two reasons for sludge formation in main lubricating oil systems.

Explain how bearing metal is attacked with particular reference to incompatibility between oil and metal.

Define the role of additives and state what normal practice must be suspended in order to maintain treated oils in their optimum condition.

6. State what is the effect of each of the following constituents of distillate fuel on ship's plant:

A. Sulphur,

B. Vanadium,

C. Water,

D. Incombustible solids.

State how each of these effects is countered.

7. Give reasoned opinions as to the accuracy of the following statements:

A. Propeller shaft keys contribute little towards torque transmission,

B. Flange mounted propellers are the ultimate in 'tail end' design.

8. Sketch an independently driven main lubricating oil pump.

Explain how it operates.

Identify with reasons the clearances critical to pump efficiency.

9. With reference to static filter units in main lubricating oil systems explain how:

A. Static filtration can be equated to dynamic separation,

B. Filtration effectiveness is monitored,

C. Fine filtration is reconciled to unrestricted flow rate

D. s of viscous fluids.

10. With reference to main refrigeration plants state how:

A. ‘Vee" block compressors are lubricated,

B. Overpressure on the discharge side is prevented,

C. Refrigeration load is controlled.

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78EKG-1

Sr. No. 5

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS- I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. Describe an example of each of the following terms related to control systems. Give sketches to explain the system wherever necessary.

(a) Fail safe,

(b) Fail set,

2. Outline the causes of:

(a) General corrosion, and

(b) Localised corrosion of a ship's hull.

During the inspection of a ship's hull in drydock, localised corrosion is found. Describe the tests and repairs which should be carried out.

3. Whilst in port, judicial proceedings are instituted against your vessel in respect of a proven case of atmospheric pollution resulting in summary conviction and the imposition of a fine.

As Chief Engineer report to head office the circumstances of the case and the steps taken to avoid such an occurrence in the future.

4. Identify with reasons which one or combination of the following conditions contribute most to tube failure in multitubular heat exchangers:

(a) High water velocity in tubes,

(b) Wasted sacrificial anodes,

(d) Tube vibration

5. State what is the significance of pH value in relation to lubricating oil.

Describe how this value is measured.

State what are the consequences of allowing the pH value of lubricating oil to deviate from closely defined limits.

6. State why greater use of alloy steels is being made in marine engineering.

Define for each of three alloy steels of different specification, its metallurgical composition, mechanical properties and the reason for selection in a specified marine engineering application.

7. Describe four defects to which propeller shafts carried in lignum vitae lined water lubricated bearings are susceptible.

Explain how the development of each of these defects may be inhibited.

State what effect lengthy voyages in ballast have on propeller shaft condition and life.

8. Draw a line diagram of a central priming system, labelling the principal items and indicating direction of flow in the various lines.

Give a general description of the system.

Explain how each pump is primed upon starting or upon loss of suction during operation.

State what advantages the system has over individual priming facilities.

9. Explain why in oil centrifuges hydrodynamic separation is superior to hydrostatic separation of liquid/solid mixtures for reasons beside time factor.

Explain why centrifuge rotors of closely packed conical discs greatly assist in the separation process.

10. Describe with sketches an accommodation air conditioning plant.

State how humidity is controlled within prescribed comfort limits.

Explain how such an installation can contribute to the efficiency of a ship's main plant.

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78EKG-1

Sr. No. 4

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. With reference to automatic combustion control in auxiliary or main boilers state how:

A. Master controller follows steam pressure variations,

B. And why pressure drop across the air registers is measured.

C. Air fuel ratio is adjusted.

2. Describe with sketches, how the pressure of a fluid is controlled by a pneumatic controller, incorporating proportional and integral (reset) action.

A. Give reasons for instability in the controller action.

B. State how this instability is overcome.

3. Whilst in port judicial proceedings are instituted against your vessel in respect of a proven case of atmospheric pollution resulting in summary conviction and the imposition of a fine.

As Chief Engineer report to head office the circumstances of the case and the steps taken to avoid such an occurrence in the future.

4. With reference to plate heat exchangers state why:

A. Fluid pressure and temperature does not normally exceed 10 bar and 1500⁰ C respectively,

B. Titanium and stainless steel plates are finding increasing acceptance,

C. Carrying bars and clamping bolts are often much longer than pack thickness.

5. Explain how main engine lubricating oil condition is assessed, on board ship and in an oil company laboratory. As chief engineer, explain what all factors you would look for and the rectification you would do.

6. Define the metallurgical composition, mechanical properties and the reasons for selection in specified shipboard applications of the following metals:

A. S.G. cast iron,

B. Aluminium brass.

C. Monel metal.

7. With reference to controllable pitch propellers:

A. Make a detailed line sketch of the essential features incorporated in a propeller shaft and boss whereby the servo signals are transmitted to the revolving shaft and translated into blade pitch.

B. Describe the regular maintenance and test checks to ensure maximum reliability at all times, State what 'fail safe' feature is incorporated and how it functions.

8. Compare the capabilities and limitations of positive displacement and rotodynamic- pumps.

A. Explain why running clearances are not so critical in gear pumps as in centrifugal pumps.

B. Explain why,variable stroke positive displacement pumps are used for hydraulic systems rather than gear pumps with recirculation control.

9. Define with reasons, the conditions which determine whether an oil centrifuge functions as either a purifier or a clarifier.

A. Identify the factors determining the extent to which suspended solids are extracted from the oil.

B. State what effect clutch slip and bowl dirtiness has upon oil conditioning.

10. With reference to refrigeration plants explain why:

A. Some multicylinder compressors are likely to seize whilst operating on full load and state how this can be avoided,

B. Direct expansion is preferable to, brine circulation in small installations,

C. A compressor may "short cycle" and state how this condition is corrected.

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78EKG-1

Sr. No. 3

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS- I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. (a) Define the conditions under which cascade control is used.

(b) Sketch a system of a cascade control for the closed regulation under all service conditions of either coolant temperature within a main propulsion diesel engine or condensate temperature at exit from a main condenser.

2. With reference to pneumatically operated control valves define:

(a) The advantages and disadvantages of soft valve seats,

(b) The purpose of valve positioners,

3. (a) Define the nature and cause of tin oxide corrosion in bearings.

(b) State how this action is identified.

4. Compare the following methods of crack detection, defining their advantages and limitations:

(a) Radiographic,

(b) Ultrasonic,

(d) Dye penetrant

5. Identify with reasons, which one of the following statements relating to plate heat exchangers is false.

(a) Plate relief patterns are designed to create turbulence,

(b) The scantlings of carrying bars and clamping bolts are designed to accommodate enlargement of pack,

(d) The temperature and pressures of fluids handled are completely unrestricted.

6. Explain how main engine lubricating oil condition is assessed from:

(a) Condition of main machinery bearings,

(b) Simple tests on board ship,

State how deterioration is inhibited by good practice.

7. Explain why metals may fail when the temperature is:

(a) High, (b) Low, (c) Normal.

Give instances where (a), (b) and (c) occasionally occur in marine practice.

8. Explain why most oily water separators operate within the turbulent flow range.

Explain how the effectiveness of simple gravity type separators can be improved at the design stage.

9. Explain why the fitting of keyless propellers is becoming increasingly common in the higher propulsion power ranges.

Sketch and describe the method of mounting the propeller using a separate sleeve in-conjunction with the boss.

Give reasons for this complication.

10. With reference to centrifugal pumps explain the cause of the following faults:

(a) Failure to deliver water,

(b) Serious reduction in capacity,

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78EKG-1

Sr. No. 2

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS I

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. (a) You were instructed to change the water treatment in the auxiliary boiler for a specified period of time.

(b) As Chief Engineer report to head office how the trial has been productive of information and data applicable to the improvement of boiler management.

2. Draw in detail, a cargo valve actuator incorporated in a pneumatic control system.

Explain how valve position is supervised from a remote control station.

3. Identify three different corrosion problems encountered in ship structure.

(a) Define the origins and significance of each.

(b) State what precautions are taken to reduce their effects.

4. Draw a line diagram of a central cooling system, labelling the principal components and showing the direction of fluid flow in all lines.

(a) Give three advantages of this system.

(b) Explain why such, a system in its simplest form is inadequate for normal shipboard requirements.

5. Define and elaborate upon the Chief Engineer's responsibilities with regard to:

(a) Avoidance of pollution of enclosed and inshore waters with oil,

(b) Avoidance of pollution of port atmosphere with smoke,

6. Describe with sketches a plate type heat exchanger.

(a) Explain how plate configuration and fluid flow across the plates effects heat transfer.

(b) Examine the problems yet to be resolved with plate type exchangers.

7. A laboratory analysis of a main lubricating oil sample revealed a quality of such inferiority as to be both unacceptable and inexcusable.

As Chief Engineer report to head office accounting for the condition of the oil and showing that by your actions you are free from blame.

8. Define the metallurgical composition, mechanical properties and the reason for selection in a specified marine engineering application of the following metals:

(a) Nodular cast iron,

(b) High tensile steel,

9. Give reasoned opinions as to the accuracy of the following statements:

(a) Propeller shaft keys contribute little towards torque transmission,

(b) Flange mounted propellers are the ultimate in 'tail end' design,

10. Sketch and describe a self contained totally submerged pump for emptying tanks of hazardous liquid chemical cargo.

(a) Explain why this type of pump is used for this service.

(b) State with reasons what safety features are incorporated in the pump design.

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78EKG-1 Sr. No. 6

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS I

(Time allowed - 3 hours)

Total Marks 100

INDIA Morning Paper

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Marks for each part question are shown in brackets.

(4) Neatness in handwriting and clarity in expression carries weightage

You have recentlyjoineda vessel as Chief Engineer. For the past several voyages it has been the practice on board to dispense with the use of the exhaust has boiler and leave it to run dry. As part of an overall economy drive the company has requested you to re-commission the boiler. Write a report to the Superintendent Engineer stating how the boiler was brought on line and the safety valves adjusted.

With reference to the 1978 SOLAS protocol which outlines mandatory requirements for steering gear tests and drills:(6)

(a)

Describethetestproceduretobecarriedoutwithinthe12hoursbeforedepartureonaseavoyage

(b)
Describe the emergency steering drills that must take place at least once in every 3 months;
(c)

State how often the test in Q.2 (a) and the drill in Q.2 (b) should be carried out for ships which regularly engage on voyages of short duration.(5)

(a) With reference to shipboard sewage systems, describe the principle of operation of EACH of the following types:(6)

(i) Flow through system;

(ii)Collection/holding/transfer system;

(iii) Zero discharge system.

(b) Explain why sewage systems involving aerobic action are to be preferred to those with anaerobic action.(5)

(c)

Explain the meaning and significance of the term biochemical oxygen demand. (5)

(8)

4. Identify three different corrosion problems encountered in ship structure.(4)

(a) Define the origins and significance of each.

(b) State what precautions are taken to reduce their effects.

5. (a) Accidents regularly occur due to premature accidental release of CO₂into machinery spaces. With reference to this, state the procedure or arrangements that you as Chief Engineer would adopt with respect to the following:(8)

(i) Contractors working on the CO₂system

(ii) Understanding between bridge and engine room in the event of fire.

(b) Sketch a bulk CO₂system and explain the operation of the system in the event of fire. (4)

Describe the following metallurgical tests and explain why EACH is carried out:(16)

(a) Impact tests;

(b) Endurance tests;

(d) Hardness tests.
7. (a) Describe a method for the attachment of bilge keels.(4)

(b) State THREE reasons for not extending bilge keels the entire length of the vessel.(4)

8. In a fresh water generator the brine density should be prevented from falling below a particular value to minimise one or a combination of the following:(16)

(a) Scale formation on the tube nests

(b) Loss in capacity and economy

State the correct answer supporting it with adequate justification

9. A fuse that blows regularly should be replaced only with a fuse from one of the following:(16)

(a) The recommended current and voltage rating

(b) Higher current and voltage rating

(d) Lower current and higher voltage rating

State the correct answer and give adequate reasons why the other alternatives should not be considered.

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78EKG-1 Sr. No. 5

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS I

(Time allowed - 3 hours)

Total Marks 100

INDIA Morning Paper

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Marks for each part question are shown in brackets.

(4) Neatness in handwriting and clarity in expression carries weightage

In view of the number of fatalities involving fixed gas fire extinguishing systems used for firefighting purposes, your company is considering alternative methods of protection for the machinery spaces. As Chief Engineer compile a letter to the company expressing your views for the retention or rejection of such a fixed gas fire extinguishing system and stating your opinion on viable alternative systems.(16)

2. An acceptable method of dealing with accumulated oil found in the pump room bilges is either one or combination of the following:(16)

(a) Transfer the oil to the sea chest

(b) Pump the oil into slop tanks

(d) Pump the oil into a clean ballast tank

(3)State the correct answer and justify why the other methods are considered non acceptable in terms of contravention of national and the international rules on pollution
a.With reference to chemical tankers:(10)

b.Sketch a suitable cargo pumping and stripping system, labelling the component parts and indicating the direction of fluid flow;(6)

4.State the requirements of the regulations evolved to reduce pollution of the sea by chemical tanker cargoes.

(10)

(a) State the laboratory tests that may be carried out on specimens of steel for ships’plate giving reasons for these tests. (10)

(b)

	C	M	Si	S	P	Al	N
Steel 'A'	0.18%	0.7%	0.3%	0.04%	0.04%	0.015%	0.005%
Steel 'B'	0.19%	0.57%	0.03%	0.029%	0.042%	0.005%	0.008%

The basic compositions of two different plates used for ship building are given in Table. One is an example of modern practice whilst the other is a specification of a 1940’s tanker that split in two due to brittle fracture. Compare these two specifications critically and explain which of these two steels would be most resistant to brittle fracture.(6)

(4)

(a) Define proportional control action.(4)

(b)Sketch and describe a simple pneumatic proportional controller.(4)

(c)State a suitable process where a proportional controller may be employed.(4)

(d) State ONE disadvantage of “proportional only” action. (5)

6. The side plating of the rudder of a vessel requires extensive welding repairs owing to cracks and pitting, and as Chief Engineer you are requested to supervise repairs to the rudder.

a.Suggest a suitable type of welding process. (4)

(b) State what tests may be carried out before returning the rudder to service.

(c)State, with reasons, FOUR common welding defects.

(a) Sketch a suitable pumping system labeling the component parts;
With reference to the carriage and pumping of liquefied gas cargo

State;

(i) Why submerged hydraulically driven pumps are not used;

(ii) How overheating of pump drive shaft bearings is avoided;

State how the risk of fire and explosion in cargo tanks is obviated both in the loaded and discharged condition.

8. During routine soundings it is found that leakage into a cofferdam is occurring from an adjacent deep cargo oil tank.

As Chief Engineer state the procedure for directing safe entry by the engine room staff to ascertain the cause of the leakage.

(b) If the leakage persists discuss EACH of the following options as a possible remedy:

(i) Leave the cofferdam to flood with oil

(ii) Flood the cofferdam with sea water

(iii) Seal the cofferdam and pressurize with air

(iv) Pump the leakage to bunker tanks.

Sketch and describe a steering gear with two 50% torque units conforming to the single failure criteria

State, with reasons, the precautions necessary when operating on two rams only;

Describe the tests necessary to ascertain that the gear will operate as required when one side of the circuit develops a malfunction.

------------------------------------------------X----------------------------------------

78EKG-1 Sr. No. 4

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS I

(Time allowed - 3 hours)

Total Marks 100

INDIA Morning Paper

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Marks for each part question are shown in brackets.

(4) Neatness in handwriting and clarity in expression carries weightage

During an inward river passage the propeller of a light ship is rotating at dead slow revolutions ahead when it strikes a large floating object causing a momentary drop in engine revolutions. As the Chief Engineer of the vessel submit a report to the owners, after the inspection of the vessel’s propulsion and transmission system that you would supervise to ensure it is safe for the vessel to continue its voyage. Assume that the vessel is anchored and that no outside assistance is available.

With reference to the health hazards from inhaling asbestos dust:

(a) Name ONE publication, which gives guidance on this hazard;

(b) State where asbestos may be found on board in
(i) Ships now being built in shipyards;
(ii) Ships built before asbestos health hazards were recognized
(c) State the health risks from contact with asbestos;

(d) Outline the precautions necessary to minimize exposure to asbestos during an emergency repair.

The taking of bunkers is an important aspect of a Chief Engineer’s responsibility.

(a)

State the safety precautions that should be observed when bunkering.

(b) Explain the importance of taking samples when bunkering.
(c) Explain a preferred method of taking samples.

(d) State the effect of EACH of the following in a fuel oil:

(i) high pour point;(ii) high density;

(iii) high water content.

4. (a) Sketch a longitudinal cross-section of a tubular heat exchanger indicating the directions of flow.

(b)

List the materials used in the construction of a tubular heat exchanger stating the reasons for your choice.

(a) (i) Sketch a combustion gas system, suitable for inerting the cargo spaces of vessel.

(ii) Describe the operation of this system.

(b) State the percentage analysis by volume of the constituents of the inert gas generated by the system in A.5 (a).

(i) Cascade control;(a) With reference to control terms, define:

(ii) Split range control.

(b)

(ii) Describe the operation of this system.(i) Show, with the aid of a sketch, the application of cascade and split range control to a shipboard cooling system.

7. Give a reasoned opinion as to the validity of the following assertions concerning ship structure:

(a)

Development of Cracks in the vicinity of propeller shaft ‘A’ brackets or spectacle frames is indicative of inadequate scantlings and strength of the vessels stern section;

(b)

The adequate provision of deck scuppers and freeing ports is as critical to seaworthiness as watertight integrity.

Relative humidity can be determined by using a psychrometric chart and one of the following. State the correct instrument and justify giving reasons why the other instruments listed will not contribute towards the result.

(a) Hydrometer

(b) Sling psychrometer

(d) Compound barometer

9. If an air compressor fails to unload on starting, one or all of the following could occur. State the correct occurrence and give adequate reasons to support your answer.

(a) Compressor would dangerously over speed

(b) Air receiver pressure would be excessively low

(d) Compressor would pump lube oil.

-------------------------------X---------------------------------

78EKG-1

Sr. No. 3

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS I

(Time allowed - 3 hours)

Total Marks 100

INDIA Morning Paper

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Marks for each part question are shown in brackets.

(4) Neatness in handwriting and clarity in expression carries weightage

1. (a) Define the conditions under which cascade control is used.

(2)

(10)

(4)

2. Identify three different corrosion problems encountered in ship structure.

(a) Define the origins and significance of each.

(b) State what precautions are taken to reduce their effects.

(8)

(4)

3. Draw a line diagram of a central cooling system installed in cargo ship carrying edible cargoes, labelling the principal components and showing the direction of flow in all lines.

(a) Explain the function of this arrangement.

(b) Give two advantages and two disadvantages of this system compared to the practice of employing separate cooling systems for each service.

(8)

(4)

4. With reference to periodically unattended machinery spaces describe how:

(a) Fire hazard from fuel leakage is greatly diminished,

(b) Immediate warning is given of sudden conflagration,

(d) Engine room heat and fumes are prevented from giving false alarms.

(4)

5. A major fire in the engine room immobilised a sister ship at sea.

(16)

6. Compare the following methods of crack detection, defining their advantages and limitations:

(a) Radiographic,

(b) Ultrasonic,

(d) Dye penetrant.

(a) Condition of main machinery bearings,

(b) Simple tests on board ship,

(4)

9. Define the metallurgical composition, mechanical properties and the reason for selection in a specified marine engineering application of the following metals:

(a) Nodular cast iron,

(b) High tensile steel,

(4)


	(5) (5) (6)

---------------------------X---------------------

95MEKG-2

Sr. No. 7

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1) Answer SIX Questions only.

(2) All Questions carry equal marks

(3) Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. In view of the number of fatalities involving inert gas used for fire fighting purposes, your company is considering alternative methods of protection for the machinery spaces. As Chief Engineer compile a letter to the company expressing your views for the retention or rejection of inert gas systems and stating your opinions on viable alternative systems.

2. (a) Explain how a discharge mechanism of a self- cleaning purifier bowl works.

(b) Comment on the problems that might occur if the self - cleaning system malfunctions.

3. With reference to engine remote control and monitoring systems:

(a) Explain how the location and nature of a fault may be determined if the instrument panel in the control room is indicating a low reading for a cylinder exhaust:

(b) State, with reasons, THREE sources of potential problems when choosing the location for transducers and signal transmission systems;

(c) In the event of complete failure of the remote control and monitoring system state how you, as 2^nd Engineer, would organise the engine room personnel to ensure safe manning of the engine room and list SIX main engine parameters which should be manually recorded.

4. (a) Describe the preparation necessary before the application (in dry dock) of sophisticated or approved long life coating to the underwater surface of the hull.

(b) State the significance of the roughness profile.

5. A rudder of a vessel requires extensive welding repairs and as Chief Engineer you are requested to supervise.

(a) Suggest a suitable type of welding process.

(b) State, with reasons, FOUR common welding defects.

6. (a) Explain why an exhaust gas boiler can only be considered as a low-grade heat exchanger.

(b) Describe how its performance can be improved and higher quality steam produced.

(c) Give reasons why it is, sometimes preferable to install independent oil fired auxiliary boilers rather than exhaust gas boilers.

7. With reference to fin stabilizers:

(a) Sketch a block diagram showing an automatic control system;

(b) Describe the operation of the system sketched in Q.7(a);

8. (a) Explain the action of EACH of the following metallurgical mechanisms:

(i) Creep;

(ii) Brinelling;

(iii) Fretting;

(iv) Fretting corrosion.

(b) State, with reasons, where EACH of the mechanisms in Q. 8 (a) may occur in a ship propulsion

system.

9. With regard to the fact that bacteria harmful to humans can exist in drinking and washing water:

water;

(b) State the maintenance and treatment recommended for fresh water tanks;

pipes;

(d) State the treatment required for fresh water from shore sources.

------------------------X-----------------------

95MEKG-2

Sr. No. 6

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1) Answer SIX Questions only.

(2) All Questions carry equal marks

(3) Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. Write a report to the Superintendent Engineer describing the condition of the spare parts for the machinery of a vessel, which you have recently joined. Give reasons why you consider some of the quantities excessive and some deficient.

2. Sketch the arrangement of a set of gravity lifeboat davits with boat-lowering winch. State, in detail, the routine attention that should be given to the davits, falls and winch to maintain efficiency at all times.

3. State a suitable material and the physical properties which influence its selection for the following piping systems: -

(a) Tele-motor transmission

(b) High-pressure CO₂.

Sketch and describe a suitable joint in each case.

4. Explain the meaning of and discuss four of the following with reference to the lubrication of marine machinery: -

(a) lacquering,

(b) scuffing,

(d) flocculation,

(e) anti-oxidant properties,

(f) demulsification.

5. State the nature of the stresses to which the crank, thrust, tunnel and propeller shafting are subjected respectively. Is it usual to make these shafts of the same diameter throughout? The answer should include a reasoned statement. What considerations govern the diameter of the crank pin?

6. (a) Explain why the properties of mild steel make it suitable for many mariner engineering purposes.

(b) State the effects of increasing the carbon content of plain carbon steel.

(c) Give TWO instances where the physical properties of steel are modified by alloying, giving reasons for this modification.

7. Give a reason for corrosion in each of the following instances:

(i) Connection between aluminium superstructure and steel deck,

(ii) In crude oil cargo tanks.

(iii) Explain how in each case corrosion can be inhibited.

8. Explain why the air supplied to a pneumatic control system must be free from dust and water. Mention the possible consequences if the air supply is contaminated and describe how these impurities are removed.

9. Give a general description of the systems of ventilation of the machinery spaces of -

(a) a steamship,

(b) a motor ship, and explain the considerations on which the system is based.

---------------X----------------

95MEKG-2

Sr. No. 5

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions only.

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. A rudder of a vessel requires extensive repairs and as Second Engineer you are requested to supervise. Give a report to the classification society of what types of the defects have been noticed, the repairs you have suggested and the inspection prerequisites that you have complied with:

(d) Suggest a suitable type of welding process.

(e) State, with reasons, FOUR common welding defects.

(f) State what tests may be carried out before returning the rudder to service.

2. (a) Explain the causes of the formation of mill scale on steel plate.

(b) Describe the preparation necessary before the application of conventional paints to the underwater surface of the hull.

(c ) Describe a coating scheme for the underwater hull using conventional paints.

3. (a ) With the aid of a block diagram describe the operation of an electronic governor fitted to an auxiliary diesel engine

(b) As engine fitted with an electronic governor behaves erratically during load changes explain the possible causes.

4. By comparing the physical properties and metallurgical compositions of the following metals, deduce with reasons which one is best suited for the associated duty:

(i) Auxiliary diesel engine pistons – cast iron, cast steel, aluminium,

(ii) Condenser tubes – brass, aluminium bronze, stainless steel.

5. (a) Sketch a simple line diagram for a fully automated domestic provisions refrigerator system incorporating a number of cold rooms.

(b) Describe the diagram detailing the devices incorporated into the system to protect the machinery and equipment against malfunction.

6. Describe the periodic check tests which should made on a CO2 fire extinguishing system regarding:-

(a) Device to warn the impending entry of gas into the machinery space.

(b) Distribution pipes.

(d) Quantity of extinguishing media.

7. Give a reason why conformity to each of the following is considered good practice in air compressors:

(a) The minimum of oil lubrication in cylinders,

(b) Absolute cleanliness of intake filters,

(d) Design clearance volume.

8. The gasket and the broken studs have been replaced on a tank manhole cover. Which of the following methods is satisfactory for testing the repair?

(a) Pressurize the tank with 10 psig air, soap the repaired area, watch for visible signs of leakage or bubbles.

(b) Fill the tank with water via the ballast pump until the innage reading corresponds to the maximum depth of the tank.

(d) Fill the tank via the ballast pump until water flows from the vent line opening on deck.

9. Shock loading, wastage, corrosion and erosion can be a problem in bilge, ballast and seawater circulating systems. Explain how these factors are taken into consideration with regard to EACH of the following:

(a) Materials used for ship side seawater inlet valves;

(b) Materials used for pipe systems;

------------------X---------------

95MEKG-2

Sr. No. 5

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions only.

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

Answers

Answer for Question 8 : Correct Answer : C

95MEKG-2

Sr. No. 4

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1) All Questions are Compulsary

(2) All Questions carry equal marks

(3) Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries

weightage.

1. Explain why regular testing of water in auxiliary boilers is desirable. For each test normally carried out, state -

(a) Reasons for making the test,

(b) Acceptable values for any particular type of auxiliary boiler,

2. A rudder of a vessel requires extensive welding repairs and as Chief Engineer you are requested to supervise.

(g) Suggest a suitable type of welding process.

(h) State, with reasons, FOUR common welding defects.

(i) State what tests may be carried out before returning the rudder to service.

3. (a) State, with reasons, the causes of fatigue cracking of engineering components.

(b) State, with reasons, how material and design defects can influence fatigue life.

(c) With reference to engine bed plate transverse girders explain how the incidence of fatigue cracking can be minimized.

4. (a) State the hazards which may be encountered when entering an enclosed space

and the precautions that should be taken.

(b) Sketch and describe an oxygen analyzer which can be used to sample the atmosphere in void or closed spaces.

5. Describe the arrangement of tank top and double bottom in the machinery space making particular reference to the structure and scantlings below the main engine. Show the method adopted in the arrangement of D.B. tanks to avoid contamination of fresh water, fuel oil and lube oil stored in D.B. tanks.

6. Describe with sketches, how load sharing is achieved between two medium speed engines driving a controllable pitch propeller through reverse/reduction gearing.

7. (a) Explain how and why the performance of reciprocating air compressors tends to

'fall off' in service.

(b) State how 'fall off' is indicated and to what extent permissible before correction.

8. The moisture sensitive element of a humidistat can be made of _____________.

(a) hair

(b) copper

(d) steel

Discuss each point and then state whether it is acceptable

9. Expansion of the tube bundle in a shell-and-tube type cooler may be provided for by the _______________.

(a) packing and lantern rings

(b) floating end tube sheet

(d) directional transverse baffles

Discuss each point and then state whether it is acceptable

---------------------------------***-------------------------------------

95MEKG-2

Sr. No. 3

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions only.

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. You have been appointed as Second Engineer on a dry cargo vessel recently purchased by your shipping company. The company superintendent requests that you examine the vessel with a view to increasing its deadweight capacity without altering the ship’s length. Outline the suggestions that you would make, justifying your proposals.

2. It is important to maintain the quality of lubricating oils in main and auxiliary diesel engines.

(a) Discuss critically the methods used to maintain crankcase oils on the various ships in which you have served.

(b) Drawing conclusions from (a) state, as Chief Engineer, your intended method of maintaining crankcase oil quality.

3. (a) State, with reasons, the causes of fatigue cracking of engineering components.

(b) State, with reasons, how material and design defects can influence fatigue life.

(c) With reference to engine bed plate transverse girders explain how the incidence of fatigue cracking can be minimized.

4. With regard to membrane wall construction in main boilers:

(a) State the reasons for its introduction.

(b) State, with reasons, the main factors that govern the relationships between the pitch, diameters and thickness of the tubes used.

(d) Explain why the water treatment used in this type of boiler is considered to be more critical than in the tangent tube construction.

5. (a) Sketch a watertight door and frame showing the manner of attachment to the bulkhead and the additional reinforcement carried by the bulkhead to compensate for the aperture.

(b) Explain how watertightness of the door and frame mating surfaces is ensured with an hydrostatic pressure tending to force the faces apart.

(ii) State the number of closing stations and the position of each.

6. With reference to the prevention of hull corrosion discuss:

(a) Surface preparation and painting of new ship plates.

(b) Design of the ships structure and its maintenance.

7. How does the cargo pumping system of a product carrier differ from that of a tanker? Sketch the cargo pumping system of product carrier.

8. (a) Describe a vacuum sewage system.

(b) With reference to the system described in A.8(a):

(i) State ONE advantage of the system;

(ii) State why a holding tank may be required to be fitted to the system;

(iii) State the problems resulting from the retention of untreated sewage in a holding tank.

9. (a) Explain the action of EACH of the following metallurgical mechanisms:

(i) Creep;

(ii) Brinelling;

(iii) Fretting;

(iv) Fretting corrosion.

system.

-----------------------X-------------------------

95MEKG-2

Sr. No. EMR

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE

(GENERAL)

CLASS II

(Time allowed - 3 hours)

INDIA (2002) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. Write a report to your Company's Superintendent Engineer concerning the method of disposal of contaminated bilge and ballast water in navigable waters in the vessel of which you are Second Engineer. Include an estimate of the daily amount of bilge contents pumped from the machinery spaces and state possible sources both of water and oil.

2. Explain the expression "turn-down ratio" of a boiler burner and its importance to automatic control of boilers. Describe two methods of controlling the output of a burner and indicate the type of burner suitable for these methods of control.

3. What general effects might continued running at service speed in heavy weather have on marine machinery? In addition state the abnormal stresses which may be imposed on:

(a) intermediate shafting,

(b) tail shafting,

(d) engine supports,

(e) thrust pads.

4. Describe an emergency generating plant for use in the event of complete failure of the main electrical installation and make particular reference to: -

(a) starting arrangements,

(b) cooling systems,

(d) periodic attention required,

(e) location.

5. What limits the height above the surface of liquid from which a pump can be made to lift on its suction side? What are the maximum lifts you would expect from -

(a) a reciprocating pump,

(b) a simple centrifugal pump,

What factors could reduce the efficiency of each of these types?

6. With reference to the corrosion of metals, write notes on: -

(a) electrolytic corrosion,

(b) the precautions necessary when using: -

(i) aluminium and steel in the same component,

(ii) ammonia.

7. Draw a line diagram of a freon refrigerator cycle and indicate the operating pressures and temperatures.

Detail the position of automatic condition sensing devices and explain how these operate to control the running of the machine.

8. Describe how the following variables are measured and their readings displayed automatically at some central station: -

(a) scavenge air pressure or forced draught fan air pressure,

(b) main engine speed,

9. Sketch and describe a marine tele-motor transmitter, receiver and associated piping. Describe how the system:

(a) allows for expansion and contraction of the fluid,

(b) is protected from the effects of vibration and shock at the receiver, being conveyed back to the transmitter,

--------------------------X-------------------------

95MEKG-2

Sr. No. 10

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions only.

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. With reference to lifeboats, describe with the aid of sketches:

(a) The handbrake used for lowering and state how it may be tested;

(b) The centrifugal brake and state the method of testing;

(ii) Explain why the ratchet is incorporated into the system.

2. With reference to passenger ship discuss the following basic principles adopted as fire safety measures:

(a) Separation of accommodation spaces from the remainder of the ship by thermal and structural boundaries.

(b) Protection of means of escape.

3. (a) Describe, with the aid of sketches where necessary, a rotary vane type steering gear, showing how the weight of the rudder and stock are carried and the arrangement that allows for wear down.

(b) State how the vanes described in Q.3 (a) are secured and the method of sealing the edges.

(d) State how, if necessary, the steering gear is locked for rudder maintenance.

(e) State what considerations determine the number of vanes.

4. (a) State the hazards which may be encountered when entering an enclosed space and the precautions that should be taken.

(b) Sketch and describe an oxygen analyzer which can be used to sample the atmosphere in void or closed spaces.

5. Explain how leakage of the undermentioned valves may become apparent to watchkeepers and state the effects on engine operation. Describe the immediate and subsequent action which might be necessary in each case:

(a) Exhaust valve

(b) Fuel valve

6. Explain why the performance of exhaust gas boilers and the quality of the steam produced is of low standard. Suggest with reasons how this standard can be improved by practices either directly or indirectly related to boiler management.

7. A high reading at a salinity cell located in the loop seal between two stages of a flash type evaporator would indicate __________.

(A) chill shocking is necessary to remove scale

(B) leakage at the second-stage condenser

(D) carryover in the first-stage

Justify your Answer stating why the other options were not considered.

8. Which of the listed methods used for testing a metal, measures the ability of a metal to absorb the energy of a load rapidly applied to the member?

(A) Brinell only

(B) Charpy only

(D) Rockwell and Brinell

Justify your Answer stating why the other options were not considered.

9. The best method of fixing a winch motor bearing of the sealed type that is running hot is to ____________.

(e) add grease through the zerk fitting

(f) allow the winch to run at slower speeds only

(g) replace the bearing with a new one

(h) apply a light oil to the bearing housing

Justify your Answer stating why the other options were not considered.

-------------------------X------------------------

95MEKG-2

Sr. No. 8

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions only.

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. In view of the number of fatalities involving inert gas used for fire fighting purposes, your company is considering alternative methods of protection for the machinery spaces. As Second Engineer compile a letter to the company expressing your views for the retention or rejection of inert gas systems and stating your opinions on viable alternative systems.

2. With reference to fixed installations for dealing with a machinery space fire:

(a) describe with the aid of a sketch a typical installation;

(b) explain the testing procedure for the equipment;

(i) remote shut down;

(ii) other equipment to be used in the event of an engine room fire.

3. There are approximately ten days of a voyage remaining before reaching port and the chemicals intended for boiler water treatment are found unfit for further use.

(a) Describe, with reasons, how the boiler and plant can be best protected whilst steaming before a fresh supply of chemicals is received.

(b) Upon arrival at the port describe any inspection and precautions that may be necessary before proceeding.

4. Cathodic protection against corrosion of ship’s hull can be provided by the “Impressed Current System “ with fully automated control. With this in mind :-

(a) In Cathodic protection, is the current flow towards the metal to be protected or away from it?

(b) Make a simple sketch showing in ‘Block’ form only, such a system with reference anode, the Cathode, a controller connected to the reference anode and a power supply connected to the anode and the hull. Show also how protection to steering system, propeller, propeller shaft and engine is provided.

5. With regard to the rolling of ships in seaway discuss ‘Activated Fin Stabilization’:

(a) Stating:

(i) Why is it desirable to fit this system in passenger vessels, large container ships etc.

(ii) Why hinged trailing flaps are fitted to the main fin.

(iii) How the stabilizing force is obtained (draw a force diagram to illustrate your answer).

(b) Give reasoned opinions as to whether or not a stabilized ship is subject to greater stresses than an unstablilized ship rolling in a sea-way.

6. (a)State the laboratory tests that may be carried out on specimens of steel for ships' plate giving reasons for the tests.

(b)The basic compositions of two ships' plates are given in Table below One is an example of modem practice whilst the other is a specification of a 1940's tanker that split in two due to briftle fracture.Compare these two specifications critically and explain which of these two steels would be most resistant to brittle fracture.

C M SI S P AI N

Steel 'A' 0.18% 0.70% 0.30% 0.04% 0.04% 0,015% 0,005%

Steal 'B' 0. 19% 0.57% 0.03% 0.029% 0.042% 0.005% 0.008%

7. An auxiliary boiler is periodically unattended and equipped with alarms to cover low water level, high steam pressure, air and flamefailure. State why and how fuel to the burners is automatically cut off under alarm conditions of water level, steam pressure, air and flame failure. Describe how and when each of the above alarms is tested without endangering the boiler.

8. Expansion of the tube bundle in a shell-and-tube type cooler may be provided for by the _______________.

(E) packing and lantern rings

(F) floating end tube sheet

(G) shell foundation bolts

(H) directional transverse baffles

Justify your Answer Stating why the other options were not considered.

9. With reference to hydraulic steering gears:

(a) Briefly define each of the following:

(i) Single failure concept;

(ii) 100 per cent redundancy.

(b) Sketch a line diagram of the actuators and their associated hydraulic system for a hydraulic steering gear capable of 100 per cent redundancy.

------------------------------X---------------------------

95MEKG-2

Sr. No. 8

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions only.

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

Answers

Answer for Question No. 8 Correct Answer : B

95MEKG-2

Sr. No. 7

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions only.

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. (a) Briefly describe the cause and effects of bacterial attack of lubricating oil.

(b) Bacterial activity has been detected in the lubricating oil of the main engine fitted in the ship aboard which you are serving as Second Engineer. Write a letter to the owner/operator of the ship indicating the action you intend taking and offer suggestions with respect to the avoidance of future incidents.

2. (a) With the aid of a sketch show the method of attachment, which allows a semi-balanced rudder to move.

(b) Explain how the angular and vertical movement of a semi-balanced rudder, are limited; giving typical limits.

3. (a) State, with reasons, the causes of fatigue cracking of engineering components.

(b) State, with reasons, how material and design defects can influence fatigue life.

(c) With reference to engine bed plate transverse girders explain how the incidence of fatigue cracking can be minimized.

4. (a) Sketch and describe a low pressure evaporator utilizing low grade heat to produce the distillate.

(b) Describe the “treatment system” that the distillate must pass through before it is regarded as potable water.

(d) State the prohibitions placed on the use of the evaporator with regard to location of the vessel.

5. (a) Sketch a watertight door and frame showing the manner of attachment to the bulkhead and the additional reinforcement carried by the bulkhead to compensate for the aperture.

(b) Explain how watertightness of the door and frame mating surfaces is ensured with an hydrostatic pressure tending to force the faces apart.

(ii) State the number of closing stations and the position of each.

6. Describe how the following conditions can be avoided in auxiliary boilers:

(a) Furnace distortion

(b) Smokebox or uptake fires

(d) Difficulty in maintaining working water level.

7. (a) Sketch a steering gear arrangement capable of 100 percent redundancy.

(b) Describe the operation of the arrangement in (a) when the working pump oil manifold develops a serious leak.

8. (a) State with reasons the problems associated with compressor lubrication and the implications of inadequate attention to those problems.

(b) Explain how compressor cylinder lubrication is influenced by correct maintenance.

9. Describe with a sketch a pneumatic relay and show how feed back can be achieved when such a relay is used in conjunction with a flapper mechanism.

--------------------------X-----------------------

95MEKG-2

Sr. No. 6

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions only.

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. You have been appointed as Second Engineer to a dry cargo vessel recently purchased by your shipping company. The company superintendent requests that you examine the vessel with a view to increasing its deadweight capacity without altering the ship’s length. Outline the suggestions that you would make, justifying your proposals.

2. Describe the in-water survey to classification society requirements of the external underwater structure of a very large crude carrier.

3. Sketch an automatic sprinkler system for combating fire in passenger spaces on a ship and state –

(a) The safety devices incorporated in the system.

(b) How the system is charged?

(d) Means provided to prevent the passage of seawater into the pressure tank.

4. With reference to main boiler super heater arrangements:

(a) Compare the advantages and disadvantages of contra flow with parallel flow design.

(b) Describe how the element tube banks are supported yet allow for expansion

5. An engine room is operating in the unmanned (UMS) mode. In the event of a failure of the UMS systems explain the arrangements a second engineer officer should introduce to operate the machinery in manual mode for a passage of 10 days duration.

6. (a) Sketch and describe TWO methods that employ manometric means for measuring tank contents.

(b) State what corrections are made to the readings obtained by the methods described in (a) in order to gauge the mass contents.

(c) Explain how bunkering requirements may be estimated when no records of main engine fuel consumption are available on board.

7. (a) Explain why, in spite of accurate alignment under static conditions, use of flexible couplings and copious supply of lubricant, main reduction gearing in still subject to pitting, scuffing and other tooth damage.

(b) Discuss the significance of viscosity in relation to the function of marine turbine oils as used in main propulsion installations, stating how the viscosity is controlled and what could cause it to change in service.

8. (a) Sketch a section through a keyless sleeved propeller.

(b) (i) State the advantages of using a keyless sleeved propeller.

(ii) State with reasons, which metal sleeve, should be made for contact with the forged mild steel tail shaft.

(iii) State the material uses to bond the sleeve to the propeller and the general thickness of the bonding material.

9. Why is it necessary to “Atomize” oil fuel before combustion? Describe how this is done for combustion in either a boiler combustion chamber or a diesel engine cylinder. How does viscosity of the oil fuel affect combustion and what are the means taken to burn heavy fuel?

----------------------------X------------------------

95MEKG-2

Sr. No. 5

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions Only

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. You have been appointed as Chief Engineer to a new vessel that experiences severe aft end vibration. The problem is thought to emanate from the propeller. The company, which is inexperienced in the operation of ships, requests that you write to them. Write a letter describing the vibration and suggesting possible remedies including the selection of a new propeller with a different number of blades.

2. Explain why mild steel is used extensively in marine machinery outlining the properties influencing its choice. State the stresses allowable in crankshafts, piston rods, boilers and pressure vessels and discuss the type of failures that may occur.

3. A hydraulically operated ballast tank valve situated in the duct keel has failed to close. State as Second Engineer, your procedure for directing safe entry by engine room staff to the duct keel to ascertain the cause and possibility to carry out a repair.

4. (a) With reference to fatigue of engineering components explain the influence of stress level and cyclical frequency on expected operating life.

(b) Explain the influence of material defects on the safe operating life of an engineering component.

(c) State the factors which influence the possibility of fatigue cracking of a bed –plate transverse girder and explain how the risk of such cracking can be minimized.

5. (a) Produce a set of instructions, for use by engine-room staff, making use of flow charts as necessary, to explain how a 2 stroke medium speed main propulsion installation operating in the UMS mode is prepared for maneuvering during poor visibility.

(b) Referring to Bridge Control, explain the relevance of the rate limiting system:

(i) During maneuvering:

(ii) Moving from full ahead to full away.

6. (a) Describe, with the aid of a sketch, how the weight of the rudder is carried.

(b) Explain how replacement of the bearing is catered for.

7. Construct a detailed schedule for the routine inspection and maintenance of an Rotary Air Conditioning Compressor assuming all previous data and instruction manuals have been mislaid / lost.

8. Give a reasoned opinion as to the accuracy of the following references to auxiliary boiler mountings:

(a) Water level gauges are apt to influence a false sense of security,

(b) The lower the rating and pressure of steam generated, the greater the possibility of safety valve malfunction.

9. A time-delay relay, with the addition of a dashpot to slow down the action of its contacts, is often used for ________.

(A) sequence control

(B) low voltage release

(D) all of the above

Explain the choice of your answer in detail, also stating as to why you did not consider the other ones.

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95MEKG-2

Sr. No. 4

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions Only

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. You have been appointed as the Second Engineer of an older vessel recently purchased by your shipping company. Describe in a letter to the engineering superintendent your inspection of the ship's fire fighting equipment to ensure satisfactory condition and operation.

2. With reference to activated fin stabilizers give reasons why:

(a) For large vessels such units are preferred to passive tanks;

(b) These units are preferred for passenger and fast cargo ships;

(c) Partial rather than maximum damping of ship movement in heavy weather is advisable for reasons other than overstressing of fin stocks and activating gear.

3. (a) Explain how analysis of used lubricating oil can be used as a health-monitoring tool for diesel machinery.

(b) Describe how vibration measurement can be used with a main engine turbo-charger:

(i) For fault analysis.

(ii) For condition monitoring for maintenance.

(iii) As a substitute to opening up machinery for survey.

4. Describe the method of setting the safety valves of an exhaust gas boiler at sea.

(a) State the limit in terms of percentage above maximum design working pressure, for setting safety valves.

(b) State the formality necessary when the chief engineer sets the safety valves.

5. Describe the hull inspection that you would carry out as the senior Engineer of a ship in drydock stating what inspection you would make as the work started, during and after completion of the work of the following:-

(a) Large sea water inlet chest and valves.

(b) Forward end of ship.

6. Briefly describe the factors contributing to the deterioration of the following after a long period of Normal use-

(a) Main engine crankshaft.

(b) Stern frames

(d) Air compressor

7. A ship operating in the U.M.S. mode must have an automatic fire detection system for the machinery space.

(a) Sketch a line diagram of the system showing how shipboard mains supply is fed through battery charger and emergency battery to fire detector heads and fire zone indicator panel and alarms.

(b) In the event of a mains supply failure state the length of time for which the emergency battery should be capable of operating the system.

8. (a) Sketch and describe the high pressure cut out for a refrigeration unit.

(b) The refrigeration compressor has cut out due to operation of the h.p. cut-out. State the possible causes.

3. Explain the meaning of the following terms with reference to automatic control systems:

(a) Control loop.

(b) Transmitter.

(d) Desired value.

------------------------X---------------------

95MEKG-2

Sr. No. 3

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions Only

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. You have been appointed as the Second Engineer of an older vessel which is in dry-dock and recently been purchased by your shipping company. Describe, in a letter to the Engineering Superintendent, your inspection to ensure that the conditions of assignment are satisfactorily complied with.

2. Sketch and describe a pneumatic control system for controlling temperature of main engine lubricating oil at outlet of the cooler and –

(a) Explain why air supplied to a pneumatic control system must be free from dust and water ;

(b) Describe how the above impurities are removed ;

3. Explain why regular testing of water in auxiliary boilers is desirable. For each test normally carried out, state -

(d) Reasons for making the test,

(e) Acceptable values for any particular type of auxiliary boiler,

(f) Action required when measured values differ appreciably from desired values.

4. Electrical power is provided from an alternator driven by a main engine, which is coupled to a controllable pitch propeller.

(a) Using a sketch to illustrate your answer, describe a suitable governor for the main engine.

(b) Give an account of the governor action to increase the power delivered by the engine in response to a large electrical load increase while also restoring and maintaining the correct frequency.

5. .With reference to rotary vane steering gear:

(a) (i) state the symptoms that would indicate leakage across vane seals;

(ii) explain how reversal of bridge control results in the rudder moving from port to starboard (or vice-versa).

(b) State the steering gear tests that should be carried out before a voyage begins.

6. Discuss the means by which corrosion of the following may be limited by manufacturers and ship's personnel respectively: -

(a) Internal and external surfaces of auxiliary steam lines.

(b) External surfaces of auxiliary boilers.

(d) Main sea water inlet lines.

7. (a) Briefly explain the term metal fatigue and further explain how fatigue failure occurs.

(b) State the difference between high stress/low cycle and low stress/high cycle fatigue giving an example of each.

(d) State how fuel injection timing and cylinder power balance can influence the possibility of fatigue cracks developing in the bedplate.

8. In the Ship construction portfolio, materials which do not conform to any class or statutory specifications must also include the ____________.

(I) chemical and physical properties of the material

(J) name of the alternative standard or specification

(K) the class or statutory specification the material approximates

(L) manufacturer or origin of the material

Justify Your Answer stating why the other options are not appropriate.

10. State a suitable material and the physical properties which influence its selection for the following piping systems: -

(d) Tele-motor transmission

(e) High-pressure CO₂.

(f) Large diameter-sea water circulating line.

Sketch and describe a suitable joint in each case.

----------------------------X--------------------------

95MEKG-2

Sr. No. 2

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

N.B. - (1) Answer SIX Question Only.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. With reference to a central cooling system:

(a) Sketch a line diagram of a typical system;

(b) Describe the system.,

2. With regards to main transmission shaft flange coupling arrangements:

(a) Sketch a hollow type coupling bolt and the hydraulic head/nut and loading rod which are used to fit it;

(b) Describe how the bolt is fitted.,

3. (a) Describe a transverse bow thrust unit using a controllable pitch propeller. Mention should be made of how it is supported and how the strength of thrust and reverse thrust are achieved.

(b) State. with reasons, a suitable prime mover for the controllable pitch propeller.

(c) State whether the thrust unit delivers a relatively low pressure head with high volume output or high pressure head with low volume output.

4. Reverse osmosis is the modern alternative for shipboard production of drinking water.

(a) Describe using simple diagrams if necessary, the principle of reverse osmosis.

(b) (i) Sketch a line diagram showing a single pass system for producing fresh water from sea water.

(ii) Describe such a system.

5. (a) Briefly describe a pump of the type that is installed in an hydraulic system for deck machinery.

(b) (i) Explain the possible causes of contamination in the hydraulic system.

(ii) State the likely results of this contamination.

(iii) Explain how such contamination can be monitored.

6. (a) Draw a line sketch of a system used as an alternative to low pressure evaporator for producing water on board ship?

(b) Explain its working principle.

7. (a) Draw centrifugal pump performance curves showing the throughput range for optimum efficiency.

(b) Compare performance curves of centrifugal and positive displacement pumps and explain the effect of heating oil cargo on pumping operation.

8. (a) Discuss the validity of the view that the provision of fixed, inert gas systems for the protection of engine room spaces is expensive, hazardous and totally unnecessary since the combustion of a small amount of oil fuel will render the atmosphere of a properly sealed engine room inert.

(b) The contents of the inert gas system have been discharged to fight a fire in the hold leaving the engine room unprotected. As Second Engineer, describe the action you would take.

9. (a) State the standing instruction you, as Second Engineer, would issue with respect to the action to be taken in the event of a boiler uptake fire.

(b) State how the incidence of uptake fires may be minimized.

(d) State the standing instruction you, as Second Engineer, would issue with respect to the avoidance of boiler furnace blow-back.

------------------------------X--------------------------

95EKG-2 Sr. No.

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

(GENERAL)

CLASS II

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. Describe the duties of a Second Engineer in relation to: -

(A) control of engine room personnel,

(B) planning maintenance and work programmes,

(D) ordering spares and stores.

2. (A) Explain the meaning of the following terms: -

(i) annealing,

(ii) normalising,

(iii) hardening,

(iv) tempering

(B) Give suitable examples of the application of such treatments to parts / components in the engine room

3. Sketch and describe the construction of an engine room telegraph and bridge linking gear. Describe how the system may be arranged to operate a wrong way alarm.

4. State the products of combustion: -

(A) in the presence of sufficient air for combustion to be complete,

(B) when there is a deficiency of air.

In both cases (A) and (B) above, state the respective dangers if the gases leak into confined spaces where personnel may be present.

5. Draw a line diagram of a freon -12 refrigerator cycle and indicate the operating pressures and temperatures.

Detail the position of automatic condition sensing devices and explain how these operate to control the running of the machine.

6. Sketch and describe a main circulating pump. Explain the method and frequency of inspection and overhaul.

Show, by sketches of the pipe arrangement, how the circulating pump may be adopted in an emergency to pump from the bilge spaces.

7. Describe how the following variables are measured and their readings displayed automatically at some central station: -

(d) scavenge air pressure or forced draught fan air pressure,

(e) main engine speed,

(f) boiler water level.

8. Sketch and describe a marine tele-motor transmitter, receiver and associated piping. Describe how the system:

(A) allows for expansion and contraction of the fluid,

(B) is protected from the effects of vibration and shock at the receiver, being conveyed back to the transmitter,

9. Describe the periodic check tests which should be made on a CO₂ fire-extinguishing system regarding:

(A) devices to warn of impending entry of gas into the machinery space,

(B) distribution pipes,

(D) quantity of extinguishing media

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95MEKG-2

Sr. No. 2

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE

(GENERAL)

CLASS II

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX Questions Only.

(2) All Questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. State how and why the following machinery items are effected when the maximum service speed of a vessel is consistently maintained in heavy weather:

(a) intermediate shafting,

(b) propeller shafting,

(d) main thrust pads.

Explain why main thrust blocks are located in close proximity to the prime movers rather than to the propellers.

2. Discuss the effects of varying the percentages of the following constituents on the physical properties of steel:

(a) Carbon,

(b) phosphorus,

(d) molybdenum

Define for each of any, three alloy steels of different specification, its metallurgical composition, mechanical properties and the reason for selection in a specified marine machinery application.

3. (a) Describe, with the aid of sketches where necessary, a rotary vane type steering gear, showing how the weight of the rudder and stock are carried and the arrangement that allows for wear down.

(b) State how the vanes described in Q.3 (a) are secured and the method of sealing the edges.

(d) State how, if necessary, the steering gear is locked for rudder maintenance.

(e) State what considerations determine the number of vanes.

4. With reference to tubular heat exchangers explain:

(a) how and why turbulence is imparted to fluid flow through the tubes;

(b) what is meant by the term ‘guided flow’ with particular reference to oil heaters;

(d) why it is desirable that coolant flow rate should not exceed that required to maintain correct fluid temperature.

7. Sketch a transverse section through one crank pin of a multi-cylinder vee-type refrigerant compressor, showing the connecting rods, pistons, cylinder heads and valves. State the materials used. What means is provided for preventing excessive pressure in the cylinder?

8. Underwater bull survey of large ships is now permitted on occasions as an alternative to dry dock inspections.

(a) State with reason what parts in particular should be inspected during such survey and describe how such a survey is conducted from a position on board the vessel concerned.

(b) Explain the effect on the performance of the propulsion machinery due to significant damage to:

(i) leading edge of propeller;

(ii) trailing edge of propeller.

7. (a) (i) Define cascade control system and elucidate with the aid of block diagrams.

(ii) Explain the operation of this cascade system.

(b) Discuss the reasons for using a cascade control system in preference to other methods.

those on the sub loop.

8. With reference to centrifugal pumps:

(a) Sketch typical discharge characteristics showing variation of throughput as discharge head is varied;

(b) Explain, with reference to pump characteristic curves, the effect of the following on PUMP performance:

(i) pump started with delivery valve shut;

(ii) pump started with suction valve shut;

(iii) cooler division plate carried away;

(iv) reduction in cross sectional area of the discharge pipe to fifty per cent of the nominal area.

9. (a) Distinguish between ‘fixed temperature’ and ‘rate of temperature rise’ types of fire detectors and state with reasons where they are likely to be located.

(b) Sketch and describe a fire detector of the ‘rate of temperature rise’ type.

(d) Describe how to verify that the fire detectors in machinery space are in working order.

95MEKG-2

Sr. No. 5

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions Only

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

Answers

Answer for Question No. 10 Correct Answer : D

95MEKG-2

Sr. No. 1

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE

(GENERAL)

CLASS II

(Time allowed - 3 hours)

INDIA (2001) Morning Paper Total Marks 100

N.B. - (1) Attempt SIX questions ONLY.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

10. Write a report to your Company's Superintendent Engineer concerning the method of disposal of contaminated bilge and ballast water in navigable waters in the vessel of which you are Second Engineer. Include an estimate of the daily amount of bilge contents pumped from the machinery spaces and state possible sources both of water and oil.

11. Explain the expression "turn-down ratio" of a boiler burner and its importance to automatic control of boilers. Describe two methods of controlling the output of a burner and indicate the type of burner suitable for these methods of control.

12. What general effects might continued running at service speed in heavy weather have on marine machinery? In addition state the abnormal stresses which may be imposed on:

(f) intermediate shafting,

(g) tail shafting,

(h) shafting coupling bolts,

(i) engine supports,

(j) thrust pads.

13. Describe an emergency generating plant for use in the event of complete failure of the main electrical installation and make particular reference to: -

(f) starting arrangements,

(g) cooling systems,

(h) fuel and its supply,

(i) periodic attention required,

(j) location.

14. What limits the height above the surface of liquid from which a pump can be made to lift on its suction side? What are the maximum lifts you would expect from -

(d) a reciprocating pump,

(e) a simple centrifugal pump,

(f) a screw displacement pump?

What factors could reduce the efficiency of each of these types?

15. With reference to the corrosion of metals, write notes on: -

(d) the precautions necessary when using: -

(iii) aluminium and steel in the same component,

(iv) ammonia.

16. Draw a line diagram of a freon refrigerator cycle and indicate the operating pressures and temperatures.

Detail the position of automatic condition sensing devices and explain how these operate to control the running of the machine.

17. Describe how the following variables are measured and their readings displayed automatically at some central station: -

(g) scavenge air pressure or forced draught fan air pressure,

(h) main engine speed,

(i) boiler water level.

18. Sketch and describe a marine tele-motor transmitter, receiver and associated piping. Describe how the system:

(d) allows for expansion and contraction of the fluid,

(e) is protected from the effects of vibration and shock at the receiver, being conveyed back to the transmitter,

(f) can be purged of air locks.

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95MEKG-2

Sr. No. 10

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class II

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)Answer SIX Questions only.

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

Answers

Answer for Question No. 7 Correct Answer : D

Answer for Question No. 8 Correct Answer : B

Answer for Question No. 9 Correct Answer : C

95MEKG-4

Sr. No. 7

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1) All Questions are Compulsory

(2) All Questions carry equal marks

(3) Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. (a) Outline the laboratory tests that are carried out on specimens of steel for ship’s plate.

(b) Explain the significance of EACH of the tests described in (a).

2. With reference to electric arc welding:-

(a) Draw a labeled sectional sketch of a satisfactory butt weld.

(b) Briefly define the following defects that may occur and how they may have been caused-

(i) Under cut

(ii) Splatter

(iii) Inclusion

(iv) Blow hole

(v) Incomplete root penetration

(vi) Lack of fusion

3. (a) Sketch a hunting gear as fitted to a hydraulic steering gear, labelling the principal items.

(b) Explain the purpose of the hunting gear.

4. With reference to a mixed flow tube and shell heat exchanger:

(a) state, with reasons, the metals used in the manufacture of the following components:

(i) tubes;

(ii) tube plates;

(iii) shell, water boxes and covers.

5. With reference to a pneumatic relay incorporating a nozzle and a flapper:

(a) State the reason for the restrictor.

(b) Describe how the flapper is kept within the operating limits of the device.

(d) State the advantages of fitting a valve positioner to a control valve.

6. If the pointer fails to return to zero when a megger is disconnected, the_____________.

(A) pointer is stuck

(B) hair springs are burned out

(D) megger is operating normally

Briefly Justify Your Answer

7. Define and explain the provisions provided to reduce the effect on the ship of the following:

(a) Painting (b) Pounding (c) Racking (d) Vibrations in engine and propeller.

8. (a) Sketch and describe a simple I. G. system provided on tankers.

(b) Describe a pressure / vacuum breaker, deckseal.

9. (a) Explain the uses, construction and location of thrust bearings.

(b) What are the clearances provided in a thrust block?

10. Briefly describe and give advantages and disadvantages for the following types of intermediate shaft bearing:

(a) Plain white metal bearings. (b) Tilting pad bearings. (c) Roller bearings.

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95MEKG-4

Sr. No. 6

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1) All Questions are Compulsory

(2) All Questions carry equal marks

(3) Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. Submit a report to the Chief Engineer stating how the fresh water generator output on board your ship was increased to near optimal values. The report should specifically mention the adjustments, corrections and improvements executed.

2. With reference to corrosion processes:

Explain the mechanism of:

(i) Stress corrosion;

(ii) Corrosion fatigue.

3. (a) Sketch a water –tight door and frame showing manner of attachment to bulkhead and the additional reinforcement carried by the bulkhead to compensate for the aperture.

(b) Explain how water –tightness of the door and frame mating surface is ensured with an hydrostatic pressure tending to force the faces apart.

(c) Describe the means of remote closing operation of the door and state how many closing stations there are and their position.

4. With reference to electric arc welding:-

(d) Draw a labeled sectional sketch of a satisfactory butt weld.

(e) Briefly define the following defects that may occur and how they may have been caused-

(vii) Under cut

(viii) Splatter

(ix) Inclusion

(x) Blow hole

(xi) Incomplete root penetration

(xii) Lack of fusion

5. Write short notes on the following:

(a) Need for draining F.O. Services tanks regularly.

(b) Need to ensure engine control room temperature is correctly maintained.

(d) To ensure that all guard rails are in place properly secured in the engine room.

6. Explain the following briefly with reference to a domestic refrigeration system on board a ship.

(a) Ingress of air into the freon system.

(b) Loss of freon from a condensor.

(d) Icing of condensor external surface.

7. Sketch and describe a contra flow type heat exchanger for the auxiliary engine applications.

8. Make a diagrammatic sketch of an exhaust gas boiler. Describe its construction and explain how it is maintained in an efficient condition.

9. State the purpose for which compressed air may be used in the machinery spaces of a motorship and explain the associated hazards if suitable operational and maintenance procedures are not followed in each case.

10. (a) Sketch and describe a fuel oil viscosity control system.

(b) If the viscosity measurement were found to be suspect. Suggest possible means of calibration of the instrument.

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95MEKG-4

Sr. No. 5

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1) All Questions are Compulsary

(2) All Questions carry equal marks

(3) Neatness in handwriting and clarity in expression carries weightage (4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. With reference to alkaline batteries used on board ship, state:

(a) The significance of the specific gravity reading of the electrolyte;

(b) When the electrolyte would normally be renewed;

(d) The normal temperature range for correct operation of a battery and the safe upper temperature limit;

(e) The effects of high and low temperatures.

2. With reference to hydraulically operated watertight doors:

(a) Sketch a typical hydraulic circuit of such an arrangement, identifying the key components

(b) Explain how it may be ascertained:

(i) That the door de-wedging force is not excessive;

(ii)That the motor torque is adequate for the duty.

3. State, with reasons, the causes of fatigue cracking of engineering components.

(a) State, with reasons, how material and design defects can influence fatigue life.

(b) With reference to engine bed plate transverse girders explain how the incidence of fatigue cracking can be minimized.

4. State how the following affect ship structures and what component

parts of the ship structure help to resist the effect-

(a) Water pressure effect

(b) Local weights

5. The amount of fuel oil atomized by a return flow oil burner is directly controlled by the ____________.

(a) header supply valve

(b) burner root valve

(d) fuel oil back pressure

6. Name and briefly describe the various types of coupling or clutches used on auxiliary machinery in the engine room ?

7. Briefly describe the most common forms of air compressor inter-coolers, and state

how they are arranged.

8. Sketch a semi balanced rudder of your choice showing :-

(a) A detail of the hinges or pintels about which rudder turns.

(b) Details of the rudder carrier ring, which supports the weight of the rudderstock and rudder.

9. State why the presence of oil in boiler water is considered serious.

Suggest likely sources of oil contamination.

Describe how the source is traced.

Describe how the whole steam plant is restored to oil free conditions.

10. (a) Describe, with the aid of a sketch, the operation of a thermostatic expansion valve

fitted to a provisions refrigeration system.

(b) Explain how the valve in (a) is installed and set up.

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95MEKG-4

Sr. No. 5

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1) All Questions are Compulsary

(2) All Questions carry equal marks

(3) Neatness in handwriting and clarity in expression carries weightage

Question 5 : Correct Answer : D

95MEKG-4

Sr. No. 4

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsary

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. Expand the abbreviation COW and write a note (in about 250 words), to the superintending engineer of your company on the benefits of having a COW system on your crude carrier

2. An inverted gate valve (stem pointing downward) may be subject to wear sooner than a similar valve installed in the upright position because ______________.

(i) the gate's full weight is upon the stem

(j) the gland stud nuts are under more pressure

(k) sediment collects in the bonnet

(l) the packing will not properly adhere to the stem

Briefly Justify Your Answer

3. After installing a new centrifugal pump in a cooling water system, what special attention should be given to the system?

A. System

B. Pump

C. Relief Valves

D. Power Supply

Briefly Justify Your Answer

4. With respect to refrigeration compressors suggest reasons for the following:

A. Short cycling

B. Provision of a back pressure valve

C. Frosting on the suction side

5. How do structural welds in the engine room fail? Briefly state the causes of any two types of failures you are aware of.

6. Discuss atleast two methods of cathodic protection of ships hull.

(i) Sacrificial Anode System.

(ii) Impressed Current System.

7. Discuss the effects of EACH of the following conditions on the maintenance schedule of multi-tubular heat exchangers using sea water as the cooling medium:

A. Low water velocity in the tubes;

B. Wasted sacrificial anodes;

C. Fluid medium of varying viscosity;

D. Structural vibration of cooler fasteners and support

8. With reference to rotary vane steering gears, explain the principle of operation, by illustrations and sketches

9. Draw a line diagram of a complete feed water system for an auxiliary boiler, labelling all the principal items and showing the direction of flow in all lines.

10. Sketch a simple auxiliary air (7 kg / cm2) system used for supplying service air.

Explain the importance and purpose of each fitting

--------------------------X------------------------

95MEKG-4

Sr. No. 3

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2003) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. With reference to a lifeboat gravity davit arrangement:

(a) Sketch the arrangement showing the lifeboat both in the housed position and at its maximum point of outboard travel;

(b) Describe the lowering and the raising of the lifeboat stating the safety features and the velocities involved.

2. With reference to centrifugal pumps :

(a) sketch typical discharge characteristics showing variation of throughput as discharge head and speeds are altered;

(b) Explain why this characteristics profile is desirable;

3. With reference to automatic control terminology, define and clarify the following :-

(a) Desired value

(b) Measured value

(d) Deviation

4. The "Uni. -Concept", i.e. the common auxiliary system for a two stroke main engine and four-stroke auxiliary engine in respect of fuel oil and cooling water are being installed on modern ships.

(a) Discuss the purpose of making such common systems on board ships;

(b) Describe with a detailed diagram a "Central Cooling System" of a motor ship stating the design features and working principle while the vessel is at sea and in port.

5. Define the following stating how they affect the ship structure and what component parts of the ship structure help to resist the effect-

(d) Racking

(e) Water pressure effect

(f) Panting

(g) Pounding

6. Briefly describe the factors contributing to the deterioration of the following-

(e) Stern frames

(f) Air compressor

(g) Main gearing reduction pinion

7. Reverse osmosis is the modern alternative for shipboard production of drinking water.

(a) Describe, using simple diagrams where necessary, the principles of reverse osmosis.

(b) Describe, with the aid of a line diagram, a single pass reverse osmosis system for producing fresh water from sea water.

8. Expain why, bottom end adjustment does not affect 'bumping' clearance.

Explain why in multi-stage, single crank compressors it is not sufficient to simply adjust the "bumping" clearance in one stage alone.

9. Sketch in detail a section through a hydraulic governor as fitted to medium speed unidirectional engines. Explain how it operates under frequent and wide load changes.

10. With reference to electro-hydraulic steering gears:

(a) Explain in terms of control parlance the function of the "Hunting gear"

(b) Explain the consequences if the standby pumping unit is motored;

--------------------------X---------------------------

95MEKG-4

Sr. No. 10

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

(4) Illustration of an Answer with clear sketches / diagrams carries weightage.

1. Sketch an automatic sprinkler system for combating fire in passenger spaces on a ship and state –

(e) The safety devices incorporated in the system.

(f) How the system is charged?

(g) The parameters governing the volume of the pressure tank.

(h) Means provided to prevent the passage of seawater into the pressure tank.

2. An auxiliary boiler water level control system has a differential pressure transmitter as the detecting element for water level.

(a) Sketch and describe such an arrangement.

(b) If the transmitter was damaged describe how a replacement unit would be calibrated.

3. Describe the following metallurgical tests and explain why EACH is carried out:

(e) Impact tests;

(f) Endurance tests;

(g) Tensile tests;

(h) Hardness tests.

4. (a) Describe a central cooling system for a motor ship.

(b) State the possible causes of corrosion in the closed system described in (a).

(i) By design;

(ii) By use of chemicals.

(d) Compare central cooling with conventional seawater circulation of coolers for main engine cooling.

5. (a) For freon-22 vapor compression refrigeration machine, state how each of the following faults are indicated and how they are remedied.

(i) Air in the system

(ii) Moisture in the system

(iii) Undercharge

(iv) Overcharge.

(b) Describe with a diagram detailing the devices incorporated into the refrigeration system to protect the machinery and equipment against malfunction.

6. Sketch a semi balanced rudder of your choice showing :-

(d) Details of the rudder carrier ring, which supports the weight of the rudderstock and rudder.

(e) State advantages of semi balanced rudder over an unbalanced rudder.

(f) What acts as “rudder stops”? What is their purpose and at what angle from mid position would you expect the rudder stops to be set.

7. Sketch a sealing arrangement for an oil lubricated stern tube; and –

(a) Identify the common forms of seal failure.

(b) State how oil loss due to seal failure can be restricted whilst on passage?

8. (a) Sketch a screw displacement pump and explain its operation

(b) State the factors which affect its efficiency.

9. The sea water in bilge, ballast and circulating systems promotes corrosion and erosion. Each system is also a potential source of flooding. Explain how these factors are taken into consideration with regard to the following:

(a) Materials used for shipside sea water inlet valves;

(b) Materials used for pipe systems;

10. (a) Explain why the properties of mild steel make it suitable for many marine engineering purposes.

(b) State the effects of increasing the carbon content of plain carbon steel.

(c) Give TWO instances where the physical properties of steel are modified by alloying, giving reasons for this modification.

---------------------------------X-----------------------------

95MEKG-4

Sr. No. 7

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. With reference to rotary vane steering gears:

(a) Describe, with the aid of a sketch, how such a unit incorporates an integral rudder carrier;

(b) Explain how vertical rudder movement is accommodated.

2. Discuss the following types of material failure :-

(a) Fatigue

(b) Creep

3. State with reasons the principal causes of fire in accommodation and service spaces while at sea and in port.

4. (a) (i) Sketch a cascade control system.

(ii) Explain the operation of this cascade system.

(b) State the reasons for using a cascade control system in preference to other methods.

5. (a) Describe the reverse osmosis system for the production of drinking water on board the ships.

(b) state-

(i) pre-treatment used with RO equipment.

(ii) The post -treatment necessary.

6. Explain why inter-cooler is fitted to air compressors. How often are they tested and how is this done? Is it possible to run such a compressor without its inter-cooler, and what would be the effect of this?

7. With reference to auxiliary diesel engine machinery:

(a) (i) State why this may be mounted on resident mountings.

(ii) State why such mounting have great flexibility;

(b) state why limit stops are provided;

8. In engine rooms that are operated under UMS conditions describe with the aid of sketches how the following are monitored:

(a) The perforation of a high pressure fuel pipe.

(b) The imminence or possibility of a scavenge fire.

9. The amount of fuel oil atomized by a return flow oil burner is directly controlled by the ____________.

(A) header supply valve

(B) burner root valve

(D) fuel oil back pressure

Briefly Justify Your Answer

10. Fuses are rated in _____________.

(A) voltage

(B) amperage

(D) all the above

Briefly Justify Your Answer

-----------------------------------X-------------------------------

95MEKG-4

Sr. No. 7

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

Answers

Answer for Question No. 9 Correct Answer : D

Answer for Question No. 10 Correct Answer : D

95MEKG-4

Sr. No. 6

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. With reference to passenger ships discuss the following basic principles adopted as fire safety measures:

(d) Protection of means of escape.

2. (a) Describe TWO methods of tracing a superficial crack in a marine machinery component.

(b) Explain how propagation of a crack in a machinery component can be arrested.

3. (a) Make a detailed sketch of a Direct Expansion Two Room Refrigeration system.

(b) Give a full description of such a Refrigeration System, explaining the purpose of the relevant control and safety devices.

4. Define briefly the construction details peculiar to each of the following types of closure that enables their primary function to be fully realised:

(a) Water tight doors,

(b) Fire proof doors,

(d) State why (a) can perform and function of (b) and (c) are restricted solely to their primary function.

5. What are the advantages and disadvantages of the single-coil type and the straight-tube type of inter-cooler for air compressor? Why are the tubes and coils generally made of copper?

6. Sketch an inertia governor as fitted to some main propulsion engines. Explain how it operates. Define its limitations.

7. (a) Describe the effects of fresh water feed on auxiliary boilers.

(b) Describe the measures taken to reduce these effects.

8. If a radial piston hydraulic pump fails to deliver rated fluid volume, the cause can be _______________.

(M) contaminated fluid

(N) pitted thrust rings

(O) worn pintle bearings

(P) obstructed suctions passage

Briefly Justify your Answer

9. A fluctuating and unsteady vacuum in an evaporator may be caused by _____________.

(a)wet steam entering the air ejector nozzle

(b) pinhole leaks in the evaporator tube nests

(c)rapid scaling on the evaporator tube nests

(d) high water levels in the last effect

Briefly Justify your Answer

10. A generator has been exposed to water and is being checked for its safe operation. Therefore, it is necessary to _______________.

(a)check for shorted coils with a explosimeter.

(b) take moisture readings with a hydrometer

(c)test insulation values with a megger

(d) ground the commutator, or slip rings and run it at half load

Briefly Justify your Answer

---------------------------X-----------------------------

95MEKG-4

Sr. No. 6

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

Answers

Answer for Question No. 8 Correct Answer : D

Answer for Question No. 9 Correct Answer : A

Answer for Question No. 10 Correct Answer : C

95MEKG-4

Sr. No. EMR

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. (a) What are the various safety trips provided in a domestic refrigeration system?

(b) Sketch any one such device and explain its functioning?

2. (a) State differences between a purifier & a clarifier?

(b) What factors govern the efficiency of purification?

3. Define the following, giving mathematical expression & corresponding graph to explain the actions of controller:

(a) Proportional action

(b) Integral action

4. Write short notes on:

(a) Annealing

(b) Case Hardening

5. (a) What is NPSH ? What is the effect of temperature changes on the NPSH?

(b) Why priming is required for centrifugal pumps?

6. (a) What do you understand by ‘Boiler Mountings’?

(b) List various mountings normally found on an aux. boiler generating low pressure steam.

7. With outline sketches, describe following types of flow in a heat exchanger:

(a) Parallel flow

(b) Mixed flow

Give two examples of each type of their use on board?

8. What are the properties that are required for lubricating oils used for:

(b) Hydraulic Machinery

(d) Turbine oil in turbo chargers

9. (a) Sketch a self-cleaning filter and describe its operation.

(b) Explain why the quality of filtration is directly related to oil flow rate.

10. Differentiate between a gate valve and a globe valve with the help of a simple sketch. State their applications on board.

----------------------------X--------------------------

95MEKG-4

Sr. No. 4

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. Describe the constructional arrangements for clearing decks of green seas or slack water.

(a) Sketch and describe a double bottom oil fuel tank air ventilator.

(b) What measures are provided on board for the prevention of contamination of fuel oil via air ventilators.

2. With reference to equipment supplied to detect and combat cargo hold fires in dry cargo ships;

(a) Describe, for a ship that carries dangerous cargo, the bridge based detection arrangement;

(b) State how fires are dealt with bearing in mind that cargo quantity varies.

3. Describe with the aid of simple diagrams:

(i) Osmosis:

(ii) Reverse osmosis.

(a) Explain TWO advantages and TWO disadvantages of producing fresh water by reverse osmosis.

(b) State the pre-treatment and post-treatment required during the reverse osmosis process for the production of potable water.

4. Define the term brittle fracture.

(a) State with reasons how and where brittle failure may occur on a ship.

(b) (i) Explain how toughness of steel may be improved.

(ii) Outline the test carried out to determine toughness.

5. With reference to an auxiliary steam installation:

(a) Explain the term water hammer indicating possible effects on the system;

(b) State how the risk of water hammer may be avoided;

6. (a) Sketch and describe a pneumatically operated control valve.

(b) Explain how the valve is operated if the controller fails.

7. Describe with the aid of sketches, the construction of a starting air receiver. Show how the ends are attached and the provision made for internal inspection. Name the mountings required and state the precaution sometime s taken against overheating by fire.

8. When replacing ball bearings on an electric motor shaft, you should ______________.

(m) tap the outer race with a mallet

(n) apply even pressure to the outer race

(o) apply even force to the inner race

(p) apply pressure evenly to both the inner and outer races

Briefly Justify Your Answer

9. Short cycling of a refrigeration compressor refers to _____________.

(Q) frequently cutting out on over load.

(R) frequently starting and stopping

(S) running too fast

(T) running too slow

Briefly Justify your Answer

10. The emergency bilge suction valve is typically used _____________.

(a) to inject cleaning additives when the bilges are extremely dirty

(b) when the main condenser becomes fouled, in order to provide additional cooling water circulation

(d) if the bilges become flooded and they can not be emptied by any other means

Briefly Justify your Answer

-------------------------------X--------------------------

95MEKG-4

Sr. No. 4

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

Answers

Answer For Question No. 8 Correct Answer : C

Answer For Question No. 9 Correct Answer : B

Answer For Question No. 10 Correct Answer : D

95MEKG-4

Sr. No. EMR

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE

(GENERAL)

CLASS IV

(Time allowed - 3 hours)

INDIA (2002) Morning Paper Total Marks 100

N.B. - (1) All questions are compulsory.

(2) All questions carry equal marks.

(3) Neatness in handwriting and clarity in expression carries weightage

1. Write a letter to the company management representative, explaining how you rectified a faulty main air compressor lubrication problem.

2. Sketch and describe a Low Pressure Fuel Oil filter of any make, known to you.

3. Give an outline sketch of an Auxiliary engine Lube Oil system, showing the safety devices in the system.

4. Write short notes on the following:

(A) Bilge suction strainers

(B) Air line filter

(D) Water tight doors

2. The pressure produced within the oil wedge of a rotating journal is ____________.

(A) the same as the pressure in the lubricating system

(B) less than the pressure in the lubricating system

(D) highest at the oil groove location

Briefly Justify your Answer

3. Which of the main shaft segments listed below, that are connected with the main engine, are coupled to the tail shaft flange?

(A) Thrust shaft

(B) Stern-tube shaft

(D) Crank shaft

Briefly Justify your Answer

4. Piping cross-sections over 30 cm in diameter are sized by the __________.

(A) inside diameter

(B) wall thickness

(D) threaded diameter

Briefly Justify your Answer

5. The ambient heat in an engine room which is identified by only a change in temperature is known as ____________.

(A) sensible heat

(B) latent heat

(D) residual heat

Briefly Justify your Answer

6. The usual number of single-acting pistons used in a variable stroke axial-piston pump used for steering gears is _____________.

(A) 3 or 5

(B) 5 or 7

(D) 9 or 11

Briefly Justify your Answer

10. Heavy soot accumulations in an auxiliary boiler could be caused by _____________.

(A) water in the fuel oil

(B) excessive cycling

(D) improper burner maintenance

Briefly Justify your Answer

95MEKG-4

Sr. No. 3

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsary

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

5. Write a letter to the company management representative, explaining how you rectified a faulty main air compressor lubrication problem.

6. Write Short notes on the following :

(a) Steam Traps

(b) Dehydrators

3. (a) Sketch an outboard type oil seal suitable for oil filled stern tube indicating the principal component

(b) Explain how the seal compensated for wear of the seal face maintains oil tightness.

(d) State the physical properties required for the bearing material in oil filled stern tube.

4. (a) State the meaning of the following and explain the process involved: -

(i) Re-Crystallization.

(ii) Grain growth.

(iii) Carbon case hardening.

(iv) Nitriding.

(v) Flame hardening.

(b) Explain the relevance of (ii) to (iii)

5. Give a line diagram of the ballast system in a dry cargo vessel and state with reasons where:-

(a) Main and branch lines run in relation to the ship’s side and tanks respectively.

(b) Air and sounding pipes are located in the tanks.

6. (a) Describe, with the aid of a sketch, how the weight of the rudder is carried.

(b) Explain how replacement of the bearing is catered for.

7. .Sketch and describe a system which senses the level of water in a boiler and utilises a differential pressure device to vary a pneumatic signal to a two step controller which regulates feed water flow to the boiler.

8. With reference to auxiliary boiler water impurity define the effects of the following salts:

(a) Calcium carbonate,

(b) Sodium chloride,

(d) Calcium sulphate.

Explain how the quantity of each is determined and controlled.

9. The burner assembly on an automatically fired auxiliary boiler fitted with variable capacity, pressure atomizing burners, maintains steam pressure by ______________.

(a) cycling on and off

(b) changing fuel oil return pressure

(d) varying air pressure supplied to the nozzle

Briefly Justify Your Answer

10. An insulation resistance test is performed on a particular piece of electric equipment. In addition to the resistance reading, what information listed below should be entered in the electrical log ___________________.

(a) The maximum allowable operating temperature of the machine.

(b) The temperature of the machine at the time the resistance reading was taken.

(d) The complete name plate data from the resistance test instrument used to obtain the reading.

Briefly Justify Your Answer

------------------------X----------------------

95MEKG-4

Sr. No. 3

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsary

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

Answers

Answer for Question No. 9 Correct Answer : b

Answer for Question No. 10 Correct Answer : b

95MEKG-4

Sr. No. 2

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

1. Write a note for your junior staff giving suitable instructions for blowing down auxiliary boiler which is to be opened up for inspection at the next port.

2. (a) Describe the survey of an oil lubricated stern bearing and shaft.

(b) Explain how the integrity of the outboard seal of an oil lubricated stern tube may be proved before the dry-dock is flooded.

3. (a) Describe the hub mechanism for a hydraulically operated controllable pitch propeller.

(b) Explain the effects of loss of hydraulic pressure.

4. State how safety is achieved with regard to gas emission in battery rooms where a large number of lead acid cells are stored with reference to:

(a) provision of lighting ;

(b) ventilation if a fan is fitted;

5. (a) Outline the laboratory tests that are carried out on specimens of steel for ship’s plate.

(b) Explain the significance of EACH of the tests described in (a).

6. With regard to membrane wall construction in main boilers:

(e) State the reasons for its introduction.

(f) State, with reasons, the main factors that govern the relationships between the pitch, diameters and thickness of the tubes used.

7. How does air locking occur in the heaters and coolers in a marine diesel machinery installation?

8. Some of the following are preferred refrigerants of the future

(a) Carbon dioxide

(b) Refrigerant 11

(d) Ammonia

(e) Bromine

(f) Argon

State in brief the correct options giving reasons why the others are ruled out?

9. In the air conditioning of a ship a “Comfort Zone” constitutes

(a) Low humidity, low room temperature

(b) Low humidity, moderate temperature

(d) Very low temperature, moderate humidity

State the correct answer, briefly giving reasons why it is necessarily the “Comfort Zone”.

10. An acceptable method of dealing with accumulated oil found in the pump room bilges is to ______________.

(a) transfer the oil to the sea chest

(b) pump the oil into the slop tanks

(d) pump the oil into a clean ballast tank

Briefly Justify Your Answer

----------------------------X--------------------------

95MEKG-4

Sr. No. 2

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

M.E.O. Class IV

(Time allowed - 3hours)

India (2002) Morning Paper Total Marks 100

NB : (1)All Questions are Compulsory

(2)All Questions carry equal marks

(3)Neatness in handwriting and clarity in expression carries weightage

Answer

Answer For Question No. 8 Correct Answer : b,c

Answer For Question No. 9 Correct Answer : b

Answer For Question No. 10 Correct Answer : b

95MEKG-4 Sr. No. EMR

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Operational Level

MARINE ENGINEERING KNOWLEDGE

(GENERAL)

CLASS IV

(Time allowed - 3 hours)

INDIA (2002) Morning Paper Total Marks 100

MARINESHELF RECENT

Sunday, October 7, 2012

E.K GENERAL SAMPLE QUESTION PAPERS OF D.G SHIPPING INDIA

78EKG-1

Sr. No. 2

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS- I

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Sr. No. 10

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS- I

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

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Sr. No. 8

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS- I

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS- I

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS- I

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS I

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS I

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS I

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS I

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EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS I

78EKG-1

Sr. No. 3

EXAMINATION OF MARINE ENGINEER OFFICER

ENGINEERING KNOWLEDGE

CLASS I

Answers

Answer for Question 8 : Correct Answer : C

NB : (1) All Questions are Compulsary

95MEKG-2

Sr. No. EMR

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE

CLASS II

Steel 'A' 0.18% 0.70% 0.30% 0.04% 0.04% 0,015% 0,005%