Q1. With reference to the operation of main propulsion engines, outline the importance of EACH of the following:
(a) Maintaining the temperature of the scavenge air above the dewpoint (4)
(b) Maintaining the fuel at the correct viscosity for injection (4)
(c) Regular on board testing of the lubricating oil (4)
(d) Ensuring rotation of exhaust valves (4)
Q5. With reference to an auxiliary boiler. state for EACH of the following circumstances the action to be taken, giving a reason for EACH action:
(a) No water level visible in gauge glass (4)
(b) Safety valve lifting (4)
(c) Excessive smoking during firing (4)
(d) Excessively high chloride content of boiler water. (4)
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