Q2. Explain the advantages of fitting highly rated medium speed engines with double exhaust and air inlet valves (6)
(b) State the disadvantages of double valve arrangements (4)
(c) Explain the possible causes of persistent burning of exhaust valves if it is:
(i) General to most cylinders (3)
(ii) Specific to a single cylinder (3)
Q9. Explain with a suitable diagram, the components of an auxiliary engine fuel valve? Briefly explain, the process of overhauling and pressure testing the fuel valve? (16)
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