Q1. Describe the examination you will carry out on the following parts of Air Compressor,
a) Suction and delivery valves and seats. (4)
b) Relief valves and bursting discs. (4)
c) coolers and cooling passages. (4)
d) Piston and piston rings. (4)
Q5. a) Describe onboard main Air Compressor maintenance schedule. (8)
b) Describe malfunctions observed on Main Air Compressor. (8)
Q9) Write short notes on:
(a) Control air dryer - working principle with diagram, of any one type of dryer of your choice (8)
(b) Any two types of Ballast water treatment system (8)
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