Answer :
Final answer:
The distance between the rocker arm (or cam follower) and the valve stem is known as valve clearance in the field of automobile engineering.
Explanation:
In automobile engineering, the term for the distance or space between the rocker arm, also known as the cam follower, and the valve stem is called the valve clearance. This clearance is crucial to the proper functioning of the engine. A valve lift, on the other hand, refers to the maximum distance the valve opens from its seat. The valve duration means the length of time (in degrees of crankshaft rotation) the valve is open, and valve timing is the precise moment in the four-stroke cycle at which the valves open and close.
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