USCG USCG Motor
Set 7 • Question #318 of 382
Launch Interactive Practice Room The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speed. In maintaining this relationship, the camshaft drive causes the camshaft to rotate at __________.
A
one-half crankshaft speed in a two-stroke cycle diesel engine
B
crankshaft speed in a two-stroke cycle diesel engine
✓ Correct Answer
C
two times crankshaft speed in a two-stroke cycle diesel engine
D
one-fourth times crankshaft speed in a four-stroke cycle diesel engine
USCG NMC Regulatory Explanation
Crankshaft deflection readings (measured between crankweb punch marks at bottom, port, top, and starboard) verify engine bedplate alignment, foundation chocking integrity, and main bearing wear.
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