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Automobile Engineering - Engineering

Q1:

It is necessary to maintain the valve clearances as they

A reduce the resistance to sliding that occurs between the cam and the tappet

B allow for lengthening of the valves owing to the heat of combustion

C increase the speed at which the valves move up and down

D make the crankshaft turn smoothly

ANS:B - allow for lengthening of the valves owing to the heat of combustion

Explanation: No answer description is available.