Explain exhaust valve working of your main engine with diagram. Explain terminologies related to exhaust valve system and use of all components of exhaust valve system.
What is the function of roto cap or valve rotator and working of it? What are the disturbances which may occur with roto cap ?
Explain lubrication of different parts (rocker arm, main bearings, camshaft drive, governor drive, rocker arm, camshaft) in 4 stroke.
What is the material of inlet and exhaust valves, piston, liner, piston rings, bedplate, A-frame, tie rod, crankshaft, cylinder head, turbocharger?