Engine Gas Turbines (Supplementary) USCG Question #90 (Set 3)

When you are using a stroboscope, if the flash speed is faster than the rpm of the object being tested, what effect will this appear to have on the object?

Official USCG Answer & Rule Citation

Correct Answer: Option B — It will appear to rotate backward

Under USCG National Maritime Center examination standards, the accepted correct answer is: It will appear to rotate backward.

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