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Q1. A. As second engineer describe the procedure involved in the complete inspection of a cylinder liner and piston assembly, indicating areas of significant interest.

B. Explain with reasons, possible faults which might be found;

C. Suggest how such faults might be avoided.

Q2. Values of some main engine exhaust temperatures displayed in the engine control room differ from those displayed on the engine for the same cylinders.

(a) Explain how it may be determined which readings are inaccurate;

(b) State possible reasons for these inaccurate readings;

(c) Explain how the location of the faults may be detected.

(d). State the periodic checks which should be carried undertaken to ensure that remote engine instrumentation is reading accurately.

Q6. A marine diesel engine fresh water cooler end cover is badly corroded and holed. Other than replacing it, suggest some measures of repairing it (a) while in operation. (b) When not in operation. Repair procedures must be effective. practicable and innovative.

Q4. Briefly explain the objectives of planned preventive maintenance. Indicate the areas where planned preventative maintenance can be applied effectively on ships. How is the work planning and scheduling carried out.

Q5. A.  During the weighment of CO2 bottles required for total flooding of Engine room, it was observed that few bottles are less than the original capacity.  State the reasons for the same and checks / tests to be made prior refilling;

B. State how often the CO2 bottles are required to be weighed and pressure tested.

Q6.(a) Suggest four reasons why the temperature of the oil in the steering gear system may  become excessive.

(b) With reference to steering gears explain how the ship may be steered in each of the following circumstances;

(i) destruction by fire of the primary supply cable;

(ii) destruction by fire of the telemotor lines;

(iii) bearing failure in the running pump;

Q7. During the overhaul of medium- speed auxiliary diesel generator you find that the white metal of one of the bottom end bearings has cracked. Explain how you would fit a spare bearing and enumerate the various tests you would carry before putting the machine back into service.

Q8. For vapour compression refrigeration machine, state how each of the following faults are indicated and how they are remedied:

(a) air in the system;

(b) Moisture in the system;

(c) undercharge;

(d) overcharge;

Q9. Write short note on the followings –

A. Metal – locking;

B.TIG and MIG welding;

C. Brazing;

D. Soldering.