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Q2. A. Sketch and describe a control system for maneuvering a main diesel engine from the bridge

B.  Explain how local control may be effected in case of breakdown of the control system described in 2 (A).

Q6. With reference to bridge control of a large slow speed propulsion engine.

A. How is starting and reversing achieved?

B. Investigate and suggest remedial action required if the engine,

(i) Fails to turn on air.

(ii) Turns on air but fails to fire on fuel;

(iii) Fails to reverse.

Q1. With reference to a particular make of main propulsion unit, describe how the engine is reversed manually and discuss the problems involved and the safety precautions which would be required if the control were operated remote from the machinery space.

Q1. Describe how each of the following procedure may be accomplished by bridge control equipment for a direct reversing 2 stroke diesel engines - Setting the direction of rotation; Starting; Controlling speed

Q9. a) For a large slow speed direct reversing engine, describe in detail the profile of a cam suitable for fuel pump operation in either the ahead or astern mode. (6)

b) With respect to cam material, describe the heat treatment employed during manufacture. (5)

c) Explain how the position of the cam relative to the crankshaft is altered when changing from Ahead to Astern running. (5)