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Q3: Your ship after having been accidentally grounded was taken to a dry-dock for inspection and necessary repairs. What defects would you look for in the following parts, that may have sustained damage due to grounding and suggest methods of repairs and tests that may be required to be carried out to the defects noticed:

A. Propeller and tail end shaft.

B. Main engine crankshaft.

Q9. Write short note on the followings –

A. Metal – locking;

B.TIG and MIG welding;

C. Brazing;

D. Soldering.

Q6. With Reference to Main Engine Fuel Pumps.

(a) Explain how the setting of a variable injection timing fuel pump is checked and adjusted.

(b) State why it may be necessary to adjust the settings of a variable injection timed fuel pump.

Q9. With respect to the operation of two stage reciprocating air compressor. Explain:

A. The causes of occasional lifting of 2nd stage relief valve.

B. Breakage of valve plates.

C. Puncture of bursting disc of 1st stage intercooler.

D. Noticeable reduction in capacity of the compressors over a period of time.

Q5. Express your reactions and state the subsequent investigation you would make if a laboratory report on a used diesel engine oil sample indicated the presence of appreciable amounts of: -

A. Iron; B. Copper, Antimony and Tin; C. Silicon.

Q2. Write short notes on following:

A. Magnetic Particle Inspection (MPI)

B.  Ultrasonic Testing (UT)

C. Radiographic Testing (RT).

Q6. With regard to keeping the gas side of boilers in good condition discusses EACH of the following:

A. the mechanism of combustion, stating the factors which are important to good combustion;

B. Oil fuel treatments;

C. Soot removal equipment;

Q7. What is Rocking test of Deck Crane? Explain the procedure of rocking test. Tabulate and indicate fault finding procedure. What is the action taken if deviation is out of limit?

Q9. Using sketches explain the difference between Pulse and Constant pressure turbocharger systems.

A. In the event of a Pulse turbocharger becoming inoperative due to mechanical breakdown explain the modifications required to allow the engine to operate safely.

B. State the instruction you as second engineer would issue regarding the additional engine monitoring requirements following the steps taken in (a).