It is necessary to maintain the valve clearances as they – McqOptions

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1.	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
Answer» C. increase the speed at which the valves move up and down

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