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THE MARINE CONSULTANT

MEO CL II WRITTEN

MARINE ENG KNOWLEDGE

QUESTIONS TILL JULY’18

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JULY 2018

Instructions: -

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level

MARINE ENGINEERING KNOWLEDGE (GENERAL)

TIME ALLOWED - 3 HOURS

Total Marks - 100

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 5. Write the full question before attempting to write the answer to same

Q1. Sketch and describe a boiler water level controller of the float operated type. State the reasons for

having this mechanism on the boiler and using this controller and boiler for analogy. Explain the

following terms: A. Detecting element; B. Servo motor; C. Desired Value 2014/FEB 2014/JUL 2015/AUG 2017/JUL 2018/JAN 2018/FEB 2018/JULY

Q2. With regard to care of lubricating oils on board answer the following – A. What is microbial

degradation of lubricating oil and how is it prevented? B. What methods are employed to ensure correct

sampling for shore based testing? C) If shore based testing results show abnormal value of water content

and TBN for crank case lube oil of a slow speed main engine, what will be interpretation and subsequent

action? 2012/DEC 2013/SR1 2013/JUL 2014/AUG 2014/NOV 2015/JAN 2015/FEB

2015/JUN 2015/SEP 2016/FEB 2016/AUG 2016/OCT 2016/SR16 2017/JAN

2017/JUN 2017/JUL 2017/DEC 2018/JULY

Q3. A. Explain the action of EACH of the following metallurgical mechanisms i. Creep; ii. Brenelling; iii.

Fretting; iv. Fretting corrosion; B. State, with reasons, where EACH of the mechanisms in Q3, (a) may

occur in ship propulsion System. 2009/JUN 2008/NOV 2008/JUN 2008/SR1 2007/FEB 2006/EMG 2009/DEC 2012/MAR 2014/FEB

2014/OCT 2015/AUG 2017/APR 2017/JUL 2018/JAN 2018/FEB 2018/JUNE 2018/JULY

Q4. With respect to the steering gear, answer the following: A. Explain with a diagram, a “fail safe

steering gear” suitable for use on a tanker of more than 100000 T dwt; B. Explain the sequence of events

that take place when an oil leak takes place in one of the hydraulic pipe lines. 2013/SR1 2013/AUG 2015/JAN 2016/FEB 2016/OCT 2016/DEC 2017/JUL 2018/JULY

Q5. Describe with a sketch a pneumatic relay and show how feedback can be achieved when such a relay

is used in conjunction with a flapper mechanism 2015/AUG 2017/JUL 2018/JAN 2018/JULY

Q6. 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; C. State the advantage of the hollow coupling bolt as compared to the traditional type of

coupling bolt.

1

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2009/AUG 2008/FEB 2007/MAR 2007/FEB 2010/APR 2010/MAR 2011/NOV 2012/SR1 2012/FEB 2014/APR 2014/NOV 2015/AUG 2016/JAN 2017/JUL 2018/JAN 2018/JULY

Q7. A. Describe a transverse bow thrust unit using CPP, mention how it should be made to support 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.

Q8. 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.

Q9. With respect to refrigeration gases used on-board vessels, answer the following; A. Explain ozone

depleting potential of conventional refrigerant gases. B. Name the alternate refrigerant gases available

and being used onboard. C. Explain the steps you will take to ensure that release of refrigerant gases

from the plant is minimized during normal operation and during maintenance activities.

2008/AUG 2007/AUG 2011/JUN 2012/JUN 2014/APR 2014/NOV 2015/AUG

2016/JAN 2018/JAN 2018/JULY

2007/FEB 2010/JUL 2012/FEB 2014/APR 2014/NOV 2015/AUG 2016/JAN

2018/JAN 2018/JULY

2013/SR1 2013/AUG 2015/JAN 2015/FEB 2015/SEP 2016/FEB 2016/AUG

2016/OCT 2017/SR1 2017/JUN 2017/JUL 2017/DEC 2018/JULY


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JUNE 2018

EXAMINATION OF MARINE ENGINEER OFFICER

Function: Marine Engineering at Management Level


TIME ALLOWED - 3 HOURS Total Marks - 100

Instructions: -

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

Q1. You have been appointed as Second Engineer of an older vessel which is in dry-docking and recently

been purchased by your shipping company. Describe, in detail about your inspection, to ensure that the

equipment’s on board ship related to safety equipment (related to firefighting and lifesaving) survey are

satisfactorily complied with.

2011/FEB 2004/AUG 2010/SR1 2011/JUL 2011/DEC 2013/JUL 2015/OCT

2016/MAR 2018/MAR 2018/JUNE

Q2. Sketch and describe the operation of four ram electro-hydraulic steering gear system. Indicate and

explain the valve position for the operation of the system when one pump is isolated and unit is

operating two rams only. 2016/APR 2016/OCT 2017/APR 2017/OCT 2018/APR 2018/JUNE

Q3. You were asked to join a ship as second engineer. During briefing you were informed about frequent

boiler uptake fires happening onboard. prepare a plan for to reduce boiler uptake fires. How will you

monitor the progress of your plan and what instructions you will issue to the watch keepers? 2017/APR 2018/APR 2018/JUNE

Q4. Damage has occurred to the main engine exhaust valves and the fuel supplied at a particular port is

suspected. The owner’s case/ however, in the ensuing dispute may be weak because the fuel was

ordered specifying only type and viscosity. A. Apart from fuel specification, describe how you, as Second

Engineer, should have assisted the owners’ case when receiving the suspect fuel. B. Describe a

recognized fuel standard that may be used when ordering bunker fuel. C. Explain how the correct fuel

standard selected. D. Suggest, with reasons, why particular mention should be made of certain elements

that might not be included in the fuel standard. 2011/MAR 2012/JUN 2016/APR 2017/APR 2017/OCT 2018/APR 2018/JUNE

Q5. With reference to oil monitoring of bilge and tanker ballast discharges: A. Describe with the aid of a

sketch, the general arrangements of an oil monitoring system; B. State the inputs that are recorded; C.

Explain the difficulties encountered with the efficient operation of the oil monitoring system. 2012/MAR 2015/JUL 2016/JUN 2017/APR 2018/APR 2018/JUNE

Q6. Sketch a sealing arrangement for an oil lubricated stern tube. A. Identify the common form of seal

failure; B. State how oil loss due to seal failure can be restricted whist on passage; C. What material is

used for sealing ring and propeller shaft liner?

1



2011/MAR 2010/OCT 2012/JUN 2013/SR1 2013/JUL 2016/FEB 2016/APR 2016/OCT 2017/APR 2017/OCT 2018/APR 2018/JUNE


Fretting; iv. Fretting corrosion; B. State, with reasons, where EACH of the mechanisms in Q3, (a) may

occur in ship propulsion System.

Q8. A. State the advantages of using steam turbine propulsion power for vessels carrying LNG cargo. B.

With regard to the use of L.N.G. cargo as boiler fuel explain: (i)The safety precautions relating to the gas

pipeline supplying the boiler and burning the gas in the boiler, (ii) The means of getting rid of “excess

gases” during loading or discharge.

Q9. With Respect to Container Ship: - A. Sketch a ship’s indirect refrigeration system arranged for

cooling containers stowed in stacks in the hold; B. Describe the refrigeration system sketched in (A) ; C.

State the advantages of the system described in (A) compared with containers with their own

refrigeration self-contained units.

2009/JUN 2008/NOV 2008/JUN 2008/SR1 2007/FEB 2006/EMG 2009/DEC 2012/MAR 2014/FEB

2014/OCT 2015/AUG 2017/APR 2017/JUL 2018/JAN 2018/FEB 2018/JUNE

2009/JUL 2008/APR 2007/SREMG 2007/AUG 2007/JUN 2007/SR1 2010/APR

2010/MAR 2010/SR1 2009/DEC 2011/JUL 2013/JUN 2014/FEB 2014/SEP

2018/FEB 2018/MAR 2018/JUNE

2006-7/SREMG 2007/APR 2006/SR5 2010/FEB 2014/AUGEM 2014/DEC 2015/JAN

2015/NOV 2017/MAR 2018/JUNE


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APRIL 2018



Instructions

1. Answer SIX questions only. THREE Questions from each section 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

Q1. As second engineer onboard a tanker, describe the procedure for presenting an auxiliary engine for

survey by a classification society. 2017/APR 2018/APR

Q2. Sketch and describe the operation of four ram electro-hydraulic steering gear system. Indicate and

explain the valve position for the operation of the system when one pump is isolated and unit is operating

two rams only.

2016/APR 2016/OCT 2017/APR 2017/OCT 2018/APR

Q3. Discuss the importance and methods employed in maintaining the quality of lubricating oils in main

and auxiliary diesel engines. As second engineer, what strategy you would employ to ensure that the main

engine crank case oil quality is ensured. 2017/APR 2018/APR

Q4. You were asked to join a ship as second engineer. During briefing you were informed about frequent

boiler uptake fires happening onboard. prepare a plan for to reduce boiler uptake fires. How will you

monitor the progress of your plan and what instructions you will issue to the watch keepers? 2017/APR 2018/APR

Q5. Damage has occurred to the main engine exhaust valves and the fuel supplied at a particular port is

suspected. The owner’s case/ however, in the ensuing dispute may be weak because the fuel was ordered

specifying only type and viscosity.

A. Apart from fuel specification, describe how you, as Second Engineer, should have assisted the owners’

case when receiving the suspect fuel.

B. Describe a recognized fuel standard that may be used when ordering bunker fuel.

C. Explain how the correct fuel standard selected.

D. Suggest, with reasons, why particular mention should be made of certain elements that might not be

included in the fuel standard.

2011/MAR 2012/JUN 2016/APR 2017/APR 2017/OCT 2018/APR

Q6. With reference to oil monitoring of bilge and tanker ballast discharges:

A. Describe with the aid of a sketch, the general arrangements of an oil monitoring system;

B. State the inputs that are recorded;

C. Explain the difficulties encountered with the efficient operation of the oil monitoring. 2012/MAR 2015/JUL 2016/JUN 2017/APR 2018/APR

1



Q7. Sketch a sealing arrangement for an oil lubricated stern tube. A. Identify the common form of seal

failure; B. State how oil loss due to seal failure can be restricted whist on passage; C. What material is used

for sealing ring and propeller shaft liner? 2011/MAR 2010/OCT 2012/JUN 2013/SR1 2013/JUL 2016/FEB 2016/APR

2016/OCT 2017/APR 2017/OCT 2018/APR


Fretting; iv. Fretting corrosion; B. State, with reasons, where EACH of the mechanisms in Q3, (a) may occur

in ship propulsion System.

2009/JUN 2008/NOV 2008/JUN 2008/SR1 2007/FEB 2006/EMG 2009/DEC

2012/MAR 2014/FEB 2014/OCT 2015/AUG 2017/APR 2017/JUL 2018/JAN

2018/FEB

Q9. State with reasons how cracking in EACH of the following location is caused rectified and avoided

1. A-frame ; 2. Bedplate longitudinal girder; 3. Bed plate transverse girder. 2011/MAR 2010/OCT 2013/SR1 2016/FEB 2016/APR 2016/OCT 2017/APR

2017/OCT 2018/APR


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MARCH 2018



Instructions


Q1. You have been appointed as Second Engineer of an older vessel which is in dry-docking and recently been purchased by your shipping company. Describe, in detail about your inspection, to ensure that the equipment on board ship related to safety equipment (related to firefighting and lifesaving) survey are satisfactorily complied with.

Q2. Sketch a high lift safety valve and seat detailing their special features; Describe how such a valve is overhauled and any clearance that should be measured and noted.

Q3. With regards to boiler water level control. Explain the following A. Shrink and swell phenomenon; B. Cascade control; C. Split control; D. Condensing chamber – Function and location.

2017/SR08 2018/SR03

Q4. With regards to steering control system. Explain following with the aid of suitable diagram. (a) Safematic concepts; (b) The flow reversal of main hydraulic pump and advantages; (c) The flow volume variation of hydraulic pump and method of achieve; (d) Hunting lever functioning.

Q5. A. With reference to fatigue of engineering components explain the influence of stress level at cyclical frequency on expected operating life.; B. Explain the influence of material defects on the safe operating life of 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.

Q6. With respect to tankers describes: - A. How a pump room is ventilated? B. How cargo tanks are ventilated? C. Cargo tank protection as per SOLAS 1974; D. Additional alarms provided for inert gas systems of the „inert gas generator‟ type.

Q7. Describe the possible faults which may be found during a dry-dock inspection of the following; A. Stern frame; B. Sea chest; C. Bilge keel; D. Anodes; E. Rudders.

2009/SR2 2008/SR12 2008/SR4 2007/SR7 2005-EM 2010/SR4 2010/SR3 2012/SR9 2013/SR7 2014/SR09

2011/SR2 2004/SR8 2010/SR1 2011/SR7 2011/SR12 2013/SR7 2015/SR10 2016/SR03

2018/SR03

2011/SR2 2010/SR4 2010/SR3 2010/SR1 2009/SR12 2013/SR2 2013/SR6 2013/SR7 2013/SR11

2014/SR03 2014/SR04 014/SR8 EM 2014/SR9 2015/SR01 2015/SR04 2016/SR07 2016/SR11 2016/SR12

2017/SR09 2017/SR11 2018/SR03

2018/SR03

2009/SR7 2008/SR6 2007/SR7 2007/EM 2006/SR5 2011/SR2 2010/SR2 2010/SR1


2014/S03 2014/SR04 2014/SR07 2014/SR09 2014/SR12 2015/SR06 2015/SR10 2016/SR1

2016/SR7 2016/SR8 2016/SR11 2017/SR03 2017/SR06 2018/SR02 2018/SR03

2009/SR2 2008/SR12 2008/SR4 2007/SR7 2010/SR2 2012/SR6 2013/SR6 2013/R11 2013/SR12

2014/EM 2014/SR9 2015/SR06 2015/SR10 20156/SR07 2016/SR11 2016/SR12 2018/SR03

1



2015/SR06 2015/SR10 2018/SR03

Q8. With reference to oily water separators: - A. Describe with the aid of a sketch, the working of such a separator; B. Explain the consequence if the interface detector position is incorrect; C. Enumerate the various possibilities by which oil / water interface can be disturbed.

Q9. A. State the advantages of using steam turbine propulsion power for vessels carrying LNG cargo. B. With regard to the use of L.N.G. cargo as boiler fuel explain: (i)The safety precautions relating to the gas pipeline supplying the boiler and burning the gas in the boiler, (ii) The means of getting rid of “excess gases” during loading or discharge.


2015/SR10 2018/SR03

2009/SR7 2008/SR4 2007/SREMG 2007/SR8 2007/SR6 2007/SR1 2010/SR4 2010/SR3 2010/SR1

2009/SR12 2011/SR7 2013/SR6 2014/SR02 2014/SR9


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FEBRUARY 2018

Instructions




Q1. Sketch and describe a boiler water level controller of the float operated type. State the reasons for having this mechanism on the boiler and using this controller and boiler for analogy. Explain the following terms: A. Detecting element; B. Servo motor; C. Desired Value.

2014/SR02 2014/SR07 2015/SR08 2017/SR07 2018/SR01

Q2. Discuss the causes of corrosion and 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; C. Water boxes of sea water coolers and condensers; D. Main sea water inlet pipes.

2014/SR02 2014/SR07 2015/SR08 2018/SR01

Q3. A. Explain the action of EACH of the following metallurgical mechanisms - i. Creep; ii. Brenelling; iii. Fretting; iv. Fretting corrosion; B. State, with reasons, where EACH of the mechanisms in Q7, (a) may occur in ship propulsion System.

2009/SR6 2008/SR11 2008/SR6 2008/SR1 2007/SR2 06/EMG 2009/SR12 2012/SR3 2014/SR02

2014/SR10 2015/SR08 2017/SR04 2017/SR07 2018/SR01

Q4. A. Describe with the aid of sketches where necessary a vane type steering gear showing how to weight of the rudder and stock are carried and the arrangement that allow for wear down; B. State how the vanes described in (A) are secured and the method of sealing the edges; C. State how, if necessary, the steering gear is locked for rudder maintenance. 2009/SR07 2007/SR7 2008/SR6 2007/SR10 2010/SR9 2010/SR6 2010/SR2 2013/SR4 2013/SR6 2013/SR07

2013/SR11 2014/SR02 2014/SR03 2014/EM08 2014/SR9 2015/SR04 2015/SR10 2017/SR09 2017/SR11

Q5. 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.




2016/SR7 2016/SR8 2016/SR11 2017/SR03 2017/SR06

Q6. A. State the advantages of using steam turbine propulsion power for vessels carrying LNG cargo. B. With regard to the use of L.N.G. cargo as boiler fuel explain - (i)The safety precautions relating to the gas pipeline supplying the boiler and burning the gas in the boiler; (ii) The means of getting rid of “excess gases” during loading or discharge. 2009/SR7 2008/SR4 2007/SREMG 2007/SR8 2007/SR6 2007/SR1 2010/SR4 2010/SR3 2010/SR1

2009/SR12 2011/SR7 2013/SR6 2014/SR02 2014/SR9

Q7. With reference to reciprocating air compressors explain why - A. Clearance volume is critical to efficiency; B. Spring- loaded plate valves are invariably used; C. Compression is accomplished in apparently unequal stages; D. Inter cooling is used between stages.

2009/SR7 2008/SR4 2012/SR9 2014/SR02 2014/SR07

1



Q8: A new vessel exhibits severe aft end vibration - A. As a Second Engineer Officer, outline a procedure to investigate and identify the source of vibration; B. Suggest possible remedies to obviate / reduce aft end vibration.

2008/SR12 2008/SR4 2012/SR9 2014/SR02

Q9: With reference to sleeved keyless propeller assemblies: A. (i) State, with reasons, the metals used in the manufacture of the sleeve and tail end shaft; (ii)State the type and thickness of material used to bond the sleeve to the propeller boss. B. When removing the propeller from the tail end shaft, state why the following procedures are not recommended: (i) Application of push off force by means of wedges or jacks and draw off force by strong back; (ii) Expansion of propeller boss by concentrated local heating with gas torches. C. State the correct procedure for the removal of the propeller from tail end shaft 2008/SR12 2008/SR9 2007/SR9 2006/SR5 2007/SR3 2007/SR4 2010/SR2 2011/SR4 2013/SR2

2014/SR02 2014/SR6 2014/SR08EM 2014/SR12 2015/SR01 2017/SR03

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JANUARY 2018



Instructions


Q1. Sketch and describe a boiler water level controller of the float operated type. State the reasons for having this mechanism on the boiler and using this controller and boiler for analogy. Explain the following terms: Detecting element; B. Servo motor; C. Desired Value

2014/SR02 2014/SR07 2015/SR08 2017/SR07 2018/SR01

Q2. Discuss the causes of corrosion and 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; C. Water boxes of sea water coolers and condensers; D. Main sea water inlet pipes.

2014/SR02 2014/SR07 2015/SR08 2018/SR01

Q3. A. Explain the action of EACH of the following metallurgical mechanisms: I. Creep; ii. Brenelling; iii. Fretting; IV. Fretting corrosion. B. State, with reasons, where EACH of the mechanisms in Q (A) may occur in ship propulsion System.

2009/SR6 2008/SR11 2008/SR6 2008/SR1 2007/SR2 06/EMG 2009/SR12 2012/SR3 2014/SR02

2014/SR10 2015/SR08 2017/SR04 2017/SR07 2018/SR01

Q4. A rudder of a vessel requires extensive welding repairs and as Second Engineer you are requested to supervise. A. Suggest a suitable type of welding process; B. State, with reasons, FOUR common welding defects. C. State what tests may be carried out before returning the rudder to service. 2009/SR8 2008/SR2 2007/SR3 2007/SR2 2012/SR1 2014/SR01 2015/SR08 2018/SR01

Q5. 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; C. State the advantage of the hollow coupling bolt as compared to the traditional type of coupling bolt.


2014/SR4 2014/SR11 2015/SR08 2016/SR01 2017/SR07 2018/SR01

Q6. Describe with a sketch a pneumatic relay and show how feedback can be achieved when such a relay is used in conjunction with a flapper mechanism


Q7. A. Explain why centrifugal pumps cannot handle air or vapours to effect priming yet turbo- blowers operating on the same principle can; B. If a vessel is fully laden, how it may be ascertained that the fire pump priming arrangements would operate satisfactorily in the ballast condition; C. Explain a method of priming suitable for a centrifugal pump.


2015/SR08 2016/SR01 2018/SR01

Q8. A. Describe a transverse bow thrust unit using cpp, mention how it should be made to support and how the strength of thrust and reverse thrust are achieved; B. State with reasons, a suitable prime mover for the controllable pitch propeller;

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


Q9. 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. Sketch a line diagram showing a single pass system for producing fresh water from sea water. (ii)Describe such a system.


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DECEMBER 2017



Instructions


Q1. A. Describe the procedure to be adopted for the inspection of a safety valve fitted to an exhaust gas boiler stating, with reasons, which parts should receive particularly close attention; B. Describe the procedure for the setting of safety valves of exhaust gas operated auxiliary boilers; C. Explain the action a Chief Engineer should take after the setting of safety valves as in (B)



2014/SR11 2015/SR02 2015/SR06 2015/SR09 2015/SR12 2017/SR01 2017/SR12

Q2. With reference to the carriage and pumping of liquefied gas cargo: A. Sketch a suitable pumping system labeling the component parts; State; B. Why submerged hydraulically driven pumps are not used; C. How overheating of pump drive shaft bearings is avoided; D. State, how the risk of fire and explosion in cargo tanks is obviated both in the loaded and discharged condition.



2016/SR09 2017/SR01 2017/SR10 2017/SR12

Q3. 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; C. State TWO methods employed to prevent the standby hydraulic pump being motored by the operating unit.

2009/SR2 2007/SR5 2006/SR9 2010/SR11 2010/SR7 2011/SR7 2011SR/10 2012/SR1


2015/SR09 2016/SR09 2017/SR01 2017/SR06 2017/SR12

Q4. A. Explain the necessity of intercoolers on a multi-stage compressor. What attention is required to keep them safe and in good working order? B. Sketch and describe an intercooler suitable for a 2400kpa compressor and state materials used. C. What attention is needed before opening up for inspection? What faults are likely to develop in an air compressor and how are they remedied.


Q5. 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?


2016/SR11 2017/SR02 2017/SR12

Q6. With reference to multi-tubular heat exchangers explain: How and where impingement attack is likely to occur in the multi-tubular heat exchangers tubes Why is it desirable that coolant flow rate should not exceed that required to maintain correct fluid temperature Ample well-shaped water boxes and smooth tube inlets are desirable in multi-tubular heat exchangers Partial obstruction of tube bore is a common cause of multi-tubular heat exchangers tube failure.


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2012/SR7 2012/SR10 2015/SR02 2015/SR09 2017/SR12

Q7. With respect to refrigeration gases used on board vessels, answer the following A. Explain ozone depleting potential of conventional refrigerant gases B. Name the alternate refrigerant gases available and being used on board. C. Explain the steps you will take to ensure that release of refrigerant gases from the plant is minimized during normal operation and during maintenance activities.

Q8. Compare and contrast the destructive testing done on engineering materials with non-destructive testing done on engineering components. Briefly describe one destructive test to illustrate the answer

2015/SR02 2015/SR06 2015/SR09 2016/SR16 2017/SR01 2017/SR12

Q9. With regards to care of lubricating oils on board answer the following. A. Microbial degradation of lubricating oil and measures to prevent the same; B. Method of ensuring correct sampling is done for the purpose of shore based testing; C. If shore based testing results show abnormal value of water content and TBN for crank case lube oil of a slow speed main engine, what will be interpretation and subsequent action?


2017/SR6 2017/SR07 2017/SR12



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NOVEMBER 2017

Instructions:

MARINE ENGINEERING KNOWLEDGE (GENERAL) TIME ALLOWED - 3 HOURS

1. Question 1 is compulsory, and a score of minimum 50%mark is essential in the same. 2. Answer SIX questions 3. All Questions carry equal marks 4. Neatness in handwriting and clarity in expression carries weightage 5. Illustration of an Answer with clear sketches /diagram carries weightage 6. All unused pages of the answer script must be cancelled out by two lines (X) across the page

Q1. During a loaded sea passage an unusual noise followed by excessive vibrations were experienced in the engine room of your vessel while she was underway. Vessel is fitted with a four-bladed propeller directly coupled to a 2 stroke Diesel engine. Engine room is located aft. After preliminary investigation and from the engine parameters, you have come to the conclusion that propeller has sustained damage. Write a letter to your company reporting this incidence and justification for your conclusion suggesting future course of action.


Q2. Draw a line diagram of an accommodation air conditioning plant labelling the principle items and showing the direction of airflow. State how: A. Accommodation air temperature is controlled; B. Humidity is controlled within prescribed comfort limits; C. such an installation can contribute to the efficiency if ship‟s main plant

2015/SR04 2017/SR09 2017/SR11

Q3. A. Sketch in diagrammatic form, a refrigeration unit operating on the vapour compression system. B. Describe how it operates and how adjustments can be made to its operating temperature. C. What effect will the following have on its operation i. high ambient temperature. ii. Gradual loss of gas. iii. Dirty heat exchanger

2015/SR04 2017/SR09 2017/SR11

Q4. During routine soundings, it is found that leakage into a cofferdam is occurring from an adjacent deep cargo oil tank. As Second Engineer state the procedure for directing safe entry by the engine room staff to ascertain the cause of the leakage. 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.


2017/SR09 2017/SR11

Q5. Discuss, with reference to the super heater outlet temperature of a main boiler operating at a constant load, the following statements: - A. An increase in excess air will tend to cause a decrease in super heater outlet temperature due to the cooling effect of more air being introduced; B. A decrease in economizer inlet temperature will tend to cause a decrease in super heater outlet temperature due to the cooling effect of more water being introduced. C. Badly fouled generating tube banks will cause an increase in the super heater outlet temperature. D. Excessive amounts of total dissolved solids in the boiler water will cause variations in the super heater outlet temperature.


Q6. With reference to hydraulic system for deck machinery identify: A. The types of contamination likely to be found in hydraulic systems for deck machinery; B. The sources of such impurities; C. Means used to prevent problems with contamination; D. Possible effects of the oil contamination on the system.



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Q7. Sketch a high lift safety valve and seat detailing their special features; Describe how such a valve is overhauled and any clearance that should be measured and noted.

2011/SR2 2010/SR4 2010/SR3 2010/SR1 2009/SR12 2013/SR2 2013/SR6 2013/SR7 2013/SR11 2014/SR03 2014/SR04 2014/SR8 EM 2014/SR9 2015/SR01 2015/SR04 2016/SR07 2016/SR11 2016/SR12

2017/SR09 2017/SR11

Q8. 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.


2014/SR6 2014/SR9 2015/SR04 2016/SR12 2017/SR09 2017/SR11

Q9. A. Describe with the aid of sketches where necessary a vane type steering gear showing how to weight of the rudder and stock are carried and the arrangement that allow for wear down; B. State how the vanes described in (A) are secured and the method of sealing the edges; C. State how, if necessary, the steering gear is locked for rudder maintenance.

2009/SR07 2007/SR7 2008/SR6 2007/SR10 2010/SR9 2010/SR6 2010/SR2 2013/SR4 2013/SR6 2013/SR07

2013/SR11 2014/SR02 2014/SR03 2014/EM08 2014/SR9 2015/SR04 2015/SR10 2017/SR09 2017/SR11

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OCTOBER 2017

Instructions




Q1. With reference to oil / water separators: A. Describe, will the aid of a sketch, the circuit for an interface detector; B. Explain the consequences if the interface position is incorrect.

2011/SR8 2013/SR12 2016/SR04 2016/SR08 2017/SR10

Q2. With reference to the carriage and pumping of liquefied gas cargo: A. Sketch a suitable pumping system labeling the component parts; State; B. Why submerged hydraulically driven pumps are not used; C. How overheating of pump drive shaft bearings is avoided; D. How tank is rendered safe both in loaded & unloaded condition. E Why at the end of discharge about 2% of liquid cargo is left in the tank. F. State, how the risk of fire and explosion in cargo tanks is obviated both in the loaded and discharged condition. 2009/SR2 2008/SR6 2006/SR4 2011/SR3 2010/SR7 2010/SR3 2011/SR2 2010/SR11 2011/SR3


2016/SR09 2017/SR01 2017/SR10

Q3. State with reasons how cracking in EACH of the following location is caused rectified and avoided - 1. A-frame; 2. Bedplate longitudinal girder; 3. Bed plate transverse girder


Q4. Describe how you, as Second Engineer, would prepare an auxiliary boiler for survey by a classification society. 2010/SR11 2011/SR3 2011/SR10 2012/SR6 2013/SR1 2013/SR7 2016/SR02 2016/SR10 2016/SR04 2017/SR10

Q5. Damage has occurred to the main engine exhaust valves and the fuel supplied at a particular port is suspected. The owner‟s case/ however, in the ensuing dispute may be weak because the fuel was ordered specifying only type and viscosity. A. Apart from fuel specification, describe how you, as Second Engineer, should have assisted the owners‟ case when receiving the suspect fuel. B. Describe a recognized fuel standard that may be used when ordering bunker fuel. C. Explain how the correct fuel standard selected. D. Suggest, with reasons, why particular mention should be made of certain elements that might not be included in the fuel standard. 2011/SR3 2012/SR6 2016/SR04 2017/SR04 2017/SR10

Q6. With reference to feed regulation: A. Describe, with the aid of sketches, the operation of a boiler feed water regulator controlled by at least two other parameters besides water level in the drum; B. Give reasons for the inclusion of the other elements besides water level in controlling feed flow; C. Deduce the possible effects on the system w3hen the drain valve in the constant leg in the level transmitter starts to leak.

2013/SR7 2013/SR8 2015/SR01 2016/SR02 2016/SR04 2016/SR10 2017/SR10

Q7. Sketch a sealing arrangement for an oil lubricated stern tube. A. Identify the common form of seal failure; B. State how oil loss due to seal failure can be restricted whist on passage; C. What material is used for sealing ring and propeller shaft liner?



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2017/SR10

Q8: 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 brittle fracture. Compare these two specifications critically and explain which of these two steels would be most resistant to brittle fracture

Q9. Draw a diagram of a four ram electro-hydraulic steering gear showing: 1. Pump isolating valves 2. Relief / Shock valves 3. Bypass valves B. Explain the operation of the system sketched in A; C. Indicate in the diagram (A) the valve positions for the operation of the system when one pump is isolated and the unit is operating on two rams only. 2016/SR04 2016/SR10 2017/SR04 2017/SR10

C M Si S P AI N

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

Steel “B” 0. 19% 0.57% 0.03% 0.029% 0.042% 0.005% 0.008% 2011/SR3 2010/SR10 2013/SR1 2016/SR02 2016/SR04 2016/SR10 2017/SR10

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SEPTEMBER 2017

Instructions 1. Answer any SIX questions.


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

Q1. During a loaded sea passage an unusual noise followed by excessive vibrations were experienced in the engine room of your vessel while she was underway. Vessel is fitted with a four-bladed propeller directly coupled to a 2 stroke Diesel engine. Engine room is located aft. After preliminary investigation and from the engine parameters, you have come to the conclusion that propeller has sustained damage. Write a letter to your company reporting this incidence and justification for your conclusion suggesting future course of action.

2007/SR5 2006/SR9 2012/SR8 2013/SR09 2013/SR11 2 015/SR04 017/SR09

Q2. Draw a line diagram of an accommodation air conditioning plant labelling the principle items and showing the direction of airflow. State how: A. Accommodation air temperature is controlled; B. Humidity is controlled within prescribed comfort limits; C. such an installation can contribute to the efficiency if ship‟s main plant

2015/SR04 017/SR09

Q3. A. Sketch in diagrammatic form, a refrigeration unit operating on the vapour compression system. B. Describe how it operates and how adjustments can be made to its operating temperature. C. What effect will the following have on its operation i. high ambient temperature. ii. Gradual loss of gas. iii. Dirty heat exchanger

2015/SR04 017/SR09

Q4. During routine soundings, it is found that leakage into a cofferdam is occurring from an adjacent deep cargo oil tank. As Second Engineer state the procedure for directing safe entry by the engine room staff to ascertain the cause of the leakage. 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.


2017/SR09

Q5. Discuss, with reference to the super heater outlet temperature of a main boiler operating at a constant load, the following statements: - A. An increase in excess air will tend to cause a decrease in super heater outlet temperature due to the cooling effect of more air being introduced; B. A decrease in economizer inlet temperature will tend to cause a decrease in super heater outlet temperature due to the cooling effect of more water being introduced. C. Badly fouled generating tube banks will cause an increase in the super heater outlet temperature. D. Excessive amounts of total dissolved solids in the boiler water will cause variations in the super heater outlet temperature.

2012/SR8 013/SR3 013/SR09 2 013/SR11 015/SR04 016/SR12 017/SR09


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2016/SR07 2016/SR11 2016/SR12 2017/SR02 2013/SR8 2015/SR06 2017/SR09

Q7. Sketch a high lift safety valve and seat detailing their special features; Describe how such a valve is overhauled and any clearance that should be measured and noted. 2011/SR2 2010/SR4 2010/SR3 2010/SR1 2009/SR12 2013/SR2 2013/SR6 2013/SR7 2013/SR11

2014/SR03 2014/SR04 014/SR8 EM 2014/SR9 2015/SR01 2015/SR04 2016/SR07 2016/SR11 2016/SR12

2017/SR09

Q8. 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. 2008/SR4 2007/SR10 2007/SR1 2006/SR4 2010/SR1 2012/SR4 2013/SR3 2013/SR6 2013/SR11

2014/SR6 2014/SR9 2015/SR04 2 016/SR12 017/SR09

Q9. A. Describe with the aid of sketches where necessary a vane type steering gear showing how to weight of the rudder and stock are carried and the arrangement that allow for wear down; B. State how the vanes described in (A) are secured and the method of sealing the edges; C. State how, if necessary, the steering gear is locked for rudder maintenance.


2013/SR7 2013/SR11 2014/SR02 2014/SR03 2014/SR08EM 2014/SR9 2015/SR04 2015/SR10 017/SR09

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AUGUST 2017



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

Q1. With reference to centrifugal pumps and pumping systems. A) Under what conditions, a centrifugal pump require a priming device for pump to operate normally? B) Draw a neat graph and explain and the performance curves of a centrifugal pump.

2017/SR08

Q2. A. List the various type of valves used on board ship relating to the function required. B. With the help of sketch, describe how a screw down non-return globe valve be made a return valve?

2017/SR08

Q3. Explain the working principle of differential Pressure Transmitter with the help of diagram and explain the following parts with their usages. A. Zero and span calibration B. Negative feedback bellow C. Pilot amplifier functions D. Zero Elevation Concept

2017/SR08

Q4. A) Explain the advantages of using hollow shaft in place of solid shaft for intermediate shaft in propulsion system. B) With the aid of a simple sketch describe the lubrication system of Plummer block bearing.

2017/SR08

Q5. With respect to heat exchanges used on board ship A) Explain parallel and contra flow B) Draw a neat diagram showing the expansion arrangement of tubes in a tube and shell type heat exchanges C) What are the factors taken into account while deciding the number of phases for fluid at the design stage?

2017/SR08

Q6. With regards to process control system explain following A. Proportional Control B. Integral Control C. Derivative Control D. The necessity of Derivative control

2017/SR08

Q7. With respect to Main Air compressors explain the effect of the following on the running of the compressor A. Improper bumping clearance B. Improper connecting rod bearing clearance C. Fouled air intake filters D. Fouled after cooler

2017/SR08

Q8. With regards to Boiler water level Control explain the following A. Shrink and swell phenomenon B. Cascade control C. Split control D. Condensing chamber - function and location

2017/SR08


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Q9. With reference to electro hydraulic steering gear systems with four rams A. With the aid of a sketch describe the working principle of hydraulic pump. B. Explain the method adopted to prevent hydraulic oil leakage along the rams C. Discuss the methods adopted to prevent damage to the steering gear due to jumping of rudder in heavy seas.

2017/SR08


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July 2017



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 5. All unused pages of answer script must be cancelled out by two lines (X) across the page

Q1. A. Explain Creep, Brinelling, Fretting and Fretting corrosion.

B. Where and why does Creep, Brinelling, Fretting and Fretting corrosion occur in a ship propulsion system? 2009/SR6 2008/SR11 2008/SR6 2008/SR1 2007/SR2 06/EMG 2009/SR12 2012/SR3 2014/SR02

2014/SR10 2015/SR08 2017/SR04 2017/SR7

Q2. Sketch and describe a boiler water level controller of the float operated type. State the reasons for having this mechanism on the boiler and using this controller and boiler for analogy. Explain the following terms: A. Detecting element; B. Servo motor; C. Desired Value

2014/SR02 2014/SR07 2015/SR08 2017/SR07

Q3. With regard to care of lubricating oils on board answer the following – A. What is microbial degradation of lubricating oil and how is it prevented? B. What methods are employed to ensure correct sampling for shore based testing? C) If shore based testing results show abnormal value of water content and TBN for crank case lube oil of a slow speed main engine, what will be interpretation and subsequent action?



Q4. 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; C. State the advantage of the hollow coupling bolt as compared to the traditional type of coupling bolt.


2014/SR4 2014/SR11 2015/SR08 2016/SR01 2017/SR07

Q5. With respect to the steering gear, answer the following: A. Explain with a diagram, a “fail safe steering gear” suitable for use on a tanker of more than 100000 T dwt; B. Explain the sequence of events that take place when an oil leak takes place in one of the hydraulic pipe lines.

2013/SR1 2013/SR8 2015/SR01 2016/SR02 2016/SR10 2016/SR12 2017/SR07

Q6. Describe with a sketch a pneumatic relay and show how feedback can be achieved when such a relay is used in conjunction with a flapper mechanism

2015/SR8 2017/SR07

Q7. With respect to refrigeration gases used on-board vessels, answer the following A. Explain ozone depleting potential of conventional refrigerant gases B. Name the alternate refrigerant gases available and being used onboard.


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C. Explain the steps you will take to ensure that release of refrigerant gases from the plant is minimized during normal operation and during maintenance activities.


2017/SR1 2017/SR6 2017/SR07

Q8. A. State why fixed pitch propellers have a poor efficiency when going astern. B. With reference to controllable pitch propellers state: i. Why is it preferable that the main servomotor be housed in the propeller hub rather than in the shafting forward of the propeller shaft? ii. What regular maintenance and checks should be carried out to ensure maximum reliability of the gear at all times?


2014/SR04 2014/SR07 2015/SR12 2016/SR01 2016/SR08 2017/SR07

Q9. 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.

2007/SR2 2010/SR7 2012/SR2 2014/SR4 2014/SR11 2015/SR08

2016/SR01

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June 2017



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 5. All unused pages of answer script must be cancelled out by two lines (X) across the page

Q1. (a) With respect to auxiliary boiler water level maintenance and indication, describe, with the aid of sketch‟s, the sensing devices for. (i) A feed pump control; (ii) Local water level; (iii) Remote water level; (iv) Low and high water level alarms.

2015/SR10 2016/SR08 2017/SR06

Q2. A.(i) Sketch a combustion gas system, suitable for inerting the cargo spaces of a vessel. (ii)Describe the operation of this system. B. State the percentage analysis by volume of the inert gas generated by the system in (A).


2017/SR3 2017/SR6

Q3. With regard to care of lubricating oils on board answer the following – A. What is microbial degradation of lubricating oil and how is it prevented? B. What methods are employed to ensure correct sampling for shore based testing? C) If shore based testing results show abnormal value of water content and TBN for crank case lube oil of a slow speed main engine, what will be interpretation and subsequent action?


2015/SR09 2016/SR02 2016/SR08 2016/SR10 2016/SR16 2017/SR1 2017/SR6

Q3. Sketch a section through a keyless sleeved propeller. B. What are the advantages of using a keyless sleeved propeller C. Which metal sleeve should be made for contact with the forged mild steel tail shaft? Give reasons D. State the material; used to bond the sleeve to the propeller and the general thickness of the bonding material. 2016/SR09 2017/SR07

Q5. A. With reference to fatigue of engineering components explain the influence of stress level at cyclical frequency on expected operating life.; B. Explain the influence of material defects on the safe operating life of 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




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2016/SR7 2016/SR8 2016/SR11 2017/SR03 2017/SR06

Q6. With respect to refrigeration gases used on-board vessels, answer the following A. Explain ozone depleting potential of conventional refrigerant gases B. Name the alternate refrigerant gases available and being used onboard. C. Explain the steps you will take to ensure that release of refrigerant gases from the plant is minimized during normal operation and during maintenance activities.

2013/SR1 2013/SR8 2015/SR01 2015/SR02 2015/SR09 2016/SR02 2016/SR08 2016/SR10 2017/SR 1

Q7. Sketch suitable welded joints indicating the approximate plate thickness and dimensions of preparation for the following purposes – A. End plate connection to the shell of an unfired pressure vessel; B. Longitudinal seam of an unfired pressure vessel; C. Prefabricated combustion chamber for an auxiliary boiler

2011/SR2 2014/SR03 2014/SR12 2016/SR09 2017/SR03 2017/SR06

Q8. A. the UMS monitoring and control system of your ship has recently started to give false alarms and incorrect data printouts. State, with reasons, possible causes if the false alarms and reading are: I. Localized to a particular area of engine operation; ii. General to the engine room B. State, with reasons, the action you, as Second Engineer, would take to ensure continued safe operation of the vessel if the defects were general to the engine room. C. Explain the procedure you, as Second Engineer, would adopt in order to locate and rectify a general fault in the UMS system.

2007/SR6 2006/SR3 2011/SR2 2014/SR03 2016/SR09 2017/SR06

Q9. 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; C. State TWO methods employed to prevent the standby hydraulic pump being motored by the operating unit.

2009/SR2 2007/SR5 2006/SR9 2010/SR11 2010/SR7 2011/SR7 2011SR/10 2012/SR1 2012/SR10 2012/SR12 2013/SR09 2013/SR10 2014/SR01 2014/SR07 2014/SR11 2015/SR02

2015/SR09 2016/SR09 2017/SR01 2017/SR06

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APRIL 2017

Instructions 1. Answer any SIX questions. 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

Q1. As second engineer onboard a tanker, describe the procedure for presenting an auxiliary engine for survey by a classification society.

2017/SR04

Q2. Sketch and describe the operation of four ram electro-hydraulic steering gear system. Indicate and explain the valve position for the operation of the system when one pump is isolated and unit is operating two rams only.

2017/SR04

Q3. Discuss the importance and methods employed in maintaining the quality of lubricating oils in main and auxiliary diesel engines. As second engineer, what strategy you would employ to ensure that the main engine crank case oil quality is ensured.

2017/SR04

Q4. You were asked to join a ship as second engineer. During briefing you were informed about frequent boiler uptake fires happening onboard. prepare a plan for to reduce boiler uptake fires. How will you monitor the progress of your plan and what instructions you will issue to the watch keepers? 2017/SR04

Q5. Damage has occurred to the main engine exhaust valves and the fuel supplied at a particular port is suspected. The owner‟s case/ however, in the ensuing dispute may be weak because the fuel was ordered specifying only type and viscosity. A. Apart from fuel specification, describe how you, as Second Engineer, should have assisted the owners‟ case when receiving the suspect fuel. B. Describe a recognized fuel standard that may be used when ordering bunker fuel. C. Explain how the correct fuel standard selected. D. Suggest, with reasons, why particular mention should be made of certain elements that might not be included in the fuel standard.

2011/SR3 2012/SR6 2016/SR04 2017/SR04

Q6. With reference to oil monitoring of bilge and tanker ballast discharges: Describe with the aid of a sketch, the general arrangements of an oil monitoring system; B. State the inputs that are recorded; C. Explain the difficulties encountered with the efficient operation of the oil monitoring.

2012/SR3 2015/SR07 2016/SR06 201/SR04

Q7. Sketch a sealing arrangement for an oil lubricated stern tube. A. Identify the common form of seal failure; B. State how oil loss due to seal failure can be restricted whist on passage; C. What material is used for sealing ring and propeller shaft liner?


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2017/SR04

8. A. Explain Creep, Brenelling, Fretting and Fretting corrosion. B. Where and why does Creep, Brenelling, Fretting and Fretting corrosion occur in a ship propulsion system?

2009/SR6 2008/SR11 2008/SR6 2008/SR1 2007/SR2 05-06/EMG 2009/SR12 2012/SR3 2014/SR02

2014/SR10 2015/SR08 2017/SR04

Q9. State with reasons how cracking in EACH of the following location is caused rectified and avoided – 1. A-frame ; 2. Bedplate longitudinal girder; 3. Bed plate transverse girder

2011/SR3 2010/SR10 2013/SR1 2016/SR02 2016/SR04 2016/SR10 2017/SR04


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MARCH 2017


Instructions 1. Question No.1 is compulsory. 2. Answer any SIX questions. 3. All questions carry equal marks. 4. Neatness in handwriting and clarity in expression carries weightage 5. Illustration of an answer with clear sketches ? diagrams carries weightage 6. All unused pages of answer script must be cancelled out by two lines (X) across the page.

Q1. A. With reference to fatigue of engineering components explain the influence of stress level at cyclical frequency on expected operating life.; B. Explain the influence of material defects on the safe operating life of 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


2012/SR6 2013/SR2 2013/SR4 2013/SR6 2013/SR7 2013/SR10 2013/SR11 2013/SR12 2014/S03 2014/SR04 2014/SR07 2014/SR09 2014/SR12 2015/SR06 2015/SR10 2016/SR1

2016/SR7 2016/SR8 2016/SR11 2017/SR03

Q2. Sketch suitable welded joints indicating the approximate plate thickness and dimensions of preparation for the following purposes – A. End plate connection to the shell of an unfired pressure vessel; B. Longitudinal seam of an unfired pressure vessel; C. Prefabricated combustion chamber for an auxiliary boiler

2011/SR2 2014/SR03 2014/SR12 2016/SR09 2017/SR03

Q3. A.(i) Sketch a combustion gas system, suitable for inerting the cargo spaces of a vessel. (ii)Describe the operation of this system. B. State the percentage analysis by volume of the inert gas generated by the system in (A).


2017/SR3

Q4:An auxiliary engine exhibits a tendency to hunt to such an extent that the engine speed variation prohibits the connection of the machine to the switchboard. (a) Discuss the possible causes of hunting. (b) Explain how the problem of hunting can be rectified.

2009/SR6 2011/SR2 2014/SR03 2014/SR07 2014/SR12 2015/SR12 2017/SR03

Q5. A. Explain why it is essential to ensure adequate cooling of air compressor cylinders, inter coolers and after coolers; B. State with reasons the possible consequences of prolonged operation of the compressor if these areas are not adequately cooled.

2007/SR4 2006/SR9 2006/SR5 2010/SR2 2012/SR6 2013/SR2 2014/SR08 EM 2014/SR12

2017/SR3

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Q6.A. Sketch a ship‟s indirect refrigeration system arranged for cooling containers stowed in stacks in the hold; B. Describe the refrigeration system sketched in (A) ; C. State the advantages of the system described in (A) compared with containers with their own refrigeration self-contained units.

Q7: With reference to sleeved keyless propeller assemblies: (i) State, with reasons, the metals used in the manufacture of the sleeve and tail end shaft; (ii)State the type and thickness of material used to bond the sleeve to the propeller boss. B. When removing the propeller from the tail end shaft, state why the following procedures are not recommended: (i) Application of push off force by means of wedges or jacks and draw off force by strong back; (ii) Expansion of propeller boss by concentrated local heating with gas torches. C. State the correct procedure for the removal of the propeller from tail end shaft

2008/SR12 2008/SR9 2007/SR9 2006/SR5 2007/SR3 2007/SR4 2010/SR2 2011/SR4 2013/SR2 2014/SR02 2014/SR6 2014/SR08EM 2014/SR12 2015/SR01 2017/SR03

Q8. A. Sketch, and describe, a valve suitable for reducing air pressure and maintaining the reduced pressure within close limits. B. Describe the processes through which air from the starting air receivers should be treated before it is used in a pneumatic control system.

Q9. Give reasons why each of the following features is considered desirable in air compressors. A. Smooth air passages with minimum obstruction at valves; B. Minimum clearance volume C. Multi-tubular heat exchangers; D. Generous size of suction filter.

2007/SR10 2010/SR2 2011/SR7 2014/SR08 2014/SR12 2015/SR01 2017/SR03

EMCY

2006-7/SREMG 2007/SR4 2006/SR5 2010/SR2 2014/SR08EMCY 2014/SR12 2015/SR01

2015/SR11 2017/SR03

2009/SR8 2010/SR2 2011/SR7 2012/SR1 2013/SR8 2014/SR08EM 2014/SR12 2015/SR01

2017/SR03

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FEBRUARY 2017

Instructions


1. Question No.1 is compulsory and score of minimum 50% marks is essential in the same. 2. Answer any SIX questions. 3. All questions carry equal marks. 4. Neatness in handwriting and clarity in expression carries weightage 5. Illustration of an answer with clear sketches ? diagrams carries weightage 6. All unused pages of answer script must be cancelled out by two lines (X) across the page.

Q1. 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; C. State the reasons for blow – back from the furnace of an auxiliary boiler; D. State the standing instruction you, as Second Engineer would issue with respect to the avoidance of boiler furnace blow – back.


2015/SR03 2017/SR02




2016/SR07 2016/SR11 2016/SR12 2017/SR02

Q3. Sketch and describe a cargo space inert gas system producing washed gas from either a main boiler or from an independent gas generator module. Elaborate the alarms and cut-outs incorporated in the system to prevent any accident.; Explain the various protections for cargo tanks with respect to pressure vacuum build up inside the tanks.


2013/SR3 2014/SR10 2013/SR03 2017/SR02

Q4. A. Identify the chief causes of overheating in tunnel bearings and of vibration in main shafting. B. Explain why the seating of the engine room amidships enhances these tendencies. C. State how overheating and vibration may be reduced or eliminated.

2011/SR8 2012/SR11 2014/SR03 2017/SR02

Q5. A. Examine in detail three common but entirely different reasons for loss of steering gear systems. B. State how failure is inhibited in the design, operation and maintenance of steering gear systems C. Describe how a vessel may make port upon irreparable failure of the steering telemotor

2011/SR8 2012/SR11 2015/SR03 2017/SR02

Q6. State why the temperature of lubricating oil supplied to an engine needs close control. Sketch and describe an arrangement and explain the principle of operation of instrumentation and control equipment for automatically maintaining the temperature of lubricating oil supplied to an engine at its desired value

11/SR8 12/SR7 12/SR11 13/SR4 2015/SR03

Q7. A. Explain the necessity of intercoolers on a multi-stage compressor. What attention is required to keep them safe and in good working order? B. Sketch and describe an intercooler suitable for a 2400kpa compressor and state materials used. C. What attention is needed before opening up for inspection? What faults are likely to develop in an air compressor and how are they remedied.

2012/SR7 2012/SR10 2013/SR4 2015/SR02 2015/SR03 2015/SR09 2017/SR02

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Q8. 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?

2010/SR12 2012/SR7 2012/SR10 2013/SR4 2015/SR02 2015/SR03

2015/SR09 2016/SR07 2016/SR11 2017/SR02

Q9. A. What are the conditions required in the cylinders of a marine diesel engine for good combustion. B. State under normal working conditions how the following may occur Black smoke, White smoke, Blue smoke. C. What may be the suspected cause for each case to occur? What would be the remedy for it?

2010/SR12 2012/SR7 2015/SR03

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