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Q2. A. Explain the term Variable Injection Timing (VIT) when applied to fuel pumps and state why a change in timing of fuel injection may be required.;

B. Describe, with the aid of sketches a VIT fuel pump and explain how the change in timing is achieved whilst the pump is in operation

C. Explain how it may be determined that individual fuel pumps are injecting the correct quantity of fuel with the correct timing at a particular pump setting.

Q9.  A report on the analysis of the main crosshead engine crankcase lubricating oil indicates the following contaminants or property changes. In EACH of the following cases give reasons for the possible causes of the contamination or property change, explaining how the actual cause would be detected; .

A. The presence of fresh water; B. White metal fragments; C. Reduced alkalinity reserve; D. Reduced anti oxidation reserve.

Q3. Discuss the effect on main engine operation of the use of low grade fuel and in particular refer to causes and prevent of liner wear. Crankshaft corrosion of exhaust space; Corrosion of exhaust space

Q4. With respect to medium speed auxiliary power generating 4 stroke medium speed diesel engines: A. Explain how the cylinder liners are effectively lubricated; B. Explain how the standby engine is maintained in a condition ready to be started immediately; C. Describe how the engine is changed from HFO operation to DO operation when running.

Q5. With reference to mechanical/hydraulic governors explain:

A. Why flyweights are driven at a higher rotational speed than the engine;

B.  How dead band effects are reduced;

C.  How hunting is reduced;

D.  How the output torque is increased.

Q2. During a routine crankcase inspection a main engine top end bearing is found to be wiped and subsequent inspection shows that the pin is badly scored.

A. Explain in detail the action which should be taken to enable the engine to be safety operated so that the vessel may reach a port where effective repair facilities are available.

B. State with reasons the factors which influence the speed at which the engine may be safely operated.

Q7. With reference to main engine starting and reversing: Define the function of air distributors; Give reasons why air distributors are not fitted to some large direct reversing engines.

Q8. A. Describe how to 'blow down’ and 'open up' a boiler for inspection; B. Identify with reasons those parts which normally require especially close examination during internal inspection.

Q9. With reference to UMS engine remote control and monitoring system, A. In the event of complete failure of such monitoring and; control systems state, with reasons, how you; as Second Engineer, would organize the engine room Staff to ensure safe operation of the engine during - Normal deep sea conditions, Manoeuvring; State, with reasons, SIX important engine parameters which should be manually; monitored following failure of the UMS system; Explain how the cause of failure of the UMS system may be traced