Step 3 » GENERAL learning environment Category C (C, C1)

GENERAL Learning Environment Category C (C, C1)
Question 87 of 533

At the four-stroke engine, the camshaft speed, compared to the crankshaft speed, is:

A twice lower;
B twice higher;
C equal.

Explanation

Explanation text category C / driving tests drpciv:
At the four-stroke engine, the camshaft speed is twice lower compared to the crankshaft speed.
The intake and exhaust valves, controlled by the camshaft, must open only once in an engine cycle (engine cycle = the 4 strokes), therefore the camshaft has a single rotation while the crankshaft makes two rotations.
Correct answer: A
Driving tests drpciv category C explained.

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