Q1. Describe the procedure for preparing a main engine, from cold, for sea service (16)
Q2. (a) Describe how modern diesel engines are pressure charged. (8)
(b) State TWO reasons for cooling the charge air before it enters the engine. (8)
Q3. With reference to Jacket Cooling Water treatment of a diesel engine:
(a) State the chemical tests caried out (6)
(b) State the frequency of testing (2)
(c) Explain why it is necessary to keep the test results within certain limits (4)
(d) State the action to be taken to rectify an abnormal test result (4)
Q4. With reference to inlet and exhaust valve on a four-stroke diesel engine:
(a) Explain why the correct tappet clearance are essential (8)
(b) State the results of the tappet clearances being
(i) Too big (4)
(ii) Too small (4)
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