General Subjects (Auxiliaries & Systems) USCG Question #664 (Set 11)

An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of __________.

Official USCG Answer & Rule Citation

Correct Answer: Option C — pump cavitation

An internal bypass in a suction strainer allows fluid to flow directly to the pump if the strainer element becomes clogged. This prevents excessive vacuum at the pump inlet, which would otherwise lead to cavitation—the formation and collapse of vapor bubbles that severely damage pump internals.

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