It is necessary to maintain the valve clearances as they

Question: 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: Option B

Explanation:

No answer description available for this question.