95MEKG-4
Sr. No. 4
EXAMINATION OF MARINE ENGINEER OFFICER
Function: Marine Engineering at Operational Level
MARINE ENGINEERING KNOWLEDGE (GENERAL)
India (2002)
M.E.O. Class IV
(Time allowed - 3hours)
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;
(c) State, with reasons, why the testing and treatment of boiler water is essential;
6. (a) Sketch and describe a pneumatically operated control valve.
(b) Explain how the valve is operated if the controller fails.
(c) Discuss the routine maintenance required for these valves.
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 ______________.
(a) tap the outer race with a mallet
(b) apply even pressure to the outer race
(c) apply even force to the inner race
(d) apply pressure evenly to both the inner and outer races
Briefly Justify Your Answer
9. Short cycling of a refrigeration compressor refers to _____________.
(a) frequently cutting out on over load.
(b) frequently starting and stopping
(c) running too fast
(d) 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
(c) to connect the rose box to the independent bilge suction
(d) if the bilges become flooded and they can not be emptied by any other means
Briefly Justify your Answer
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95MEKG-4
Sr. No. 4
EXAMINATION OF MARINE ENGINEER OFFICER
Function: Marine Engineering at Operational Level
MARINE ENGINEERING KNOWLEDGE (GENERAL)
India (2002)
M.E.O. Class IV
(Time allowed - 3hours)
Morning Paper
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
Total Marks 100