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EXAMINATION FOR CERTIFICATE OF COMPETENCY

M.E.O. CLASS-3 ENGINEERING

ENGINEERING KNOWLEDGE (GENERAL)

FEBRUARY 2012 FULL MARKS: 100

Answer any six questions from section-AAnswer any two questions from section-B

Answer any two questions from section-C

SECTION A

1. a) With respect to oily water separators state why rotary positive displacement pumps are preferable to

centrifugal pumps for supply purpose. (3)

b) How Coalescers separate the oil and water? (2)

c) Draw and show how does 15 ppm oil monitoring device is functioning. (5)

2. a) Describe with the help of a sketch the operating principle of a bilge pump. (5)

b) State two reasons why the above type pump is used. (2)

c) The above pump not taking suction, state three main reason. (3)

3. a) Sketch and describe a tubular heat exchanger. (5)

b) Explain how the expansion of above is allowed. (3)

c) State how the cooler is protected against corrosion. (2)

4. Define the followings:

a) Magnetic particle inspection (2)

b) Fretting (3)

c) Forging (3)

d) Case Hardening (2)

5. With respect to steering gear mechanism, explain the following:

a) Working principle of a two ram steering gear. (5)

b) Purpose of (5)

i) Hunting gear ii) receiver.

6. a) Draw an oil sealing arrangement for stern tube aft and fwd seal. (7)

b) Compare the advantage of above with water lubricated one. (3)

7. With reference to entry of personnel into enclosed spaces

a) State what minimum oxygen content in atmosphere within a space could be considered safe. (2)

b) Explain with the aid of sketch, the operation of an oxygen meter suitable for checking the atmosphere

within an enclosed space. (6)

c) Explain why indication of satisfactory oxygen content does not necessery mean that it is safe to enter a

space. (2)

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8. a) Describe the value of regular systematic inspection of main air compressor, reservoirs and attendant

accessories (6)

b) Identify common faults to which compressors and resevoirs are susceptible (4)

SECTION B

9. With respect to the ISM code state:

a) the objectives of ISM code (4)

b) the functional requirements of a safety management system (3)

c) the responsibility and authority of designated person ashore (3)

10. a) State the garbage disposal procedure at sea as per Marpol regulation (4)

b) State Marpol annex VI. (3)

c) State SECA areas and when did they come in force? (3)

11. Define followings: (10)a) Non conformity b) Port state control c) SOPEP d) FSS code

SECTION C

12. a) Draw a differential pressure transmitter. (6)

b) State the working principle for same. (4)

13. Define the followings: (10)

a) Closed loop

b) Cascade control

c) Actuator

d) Feedback

14. a) What is proportional control? (2)

b) Explain the function of proportional controller. (5)

c) How fail safe arrangement is ensured in control valves. (3)