Q4. With reference to Main engine piston rings:
(a) Analyze the causes of piston ring breakage.
(b) How maintenance and engine operation can minimize piston ring breakage.
(c) Explain the possible consequences with respect to performance and safety of operating the engine with broken or severely worn piston rings
Q2. a) Draw sectional diagram of main engine piston showing each part. (8)
b) Show cooling passages for oil cooled piston. (4)
c) What is material of crown and other parts of piston. (4)
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