Motor Plants & Auxiliary Boilers USCG Question #1497 (Set 31)

As shown in the illustration, which of the following conditions would be responsible for a "low-pressure in oil outlet" alarm to be indicated? Illustration MO-0127

USCG Exam Illustration MO-0127
USCG Examination Diagram: Illustration MO-0127
Official USCG Answer & Rule Citation

Correct Answer: Option B — Throughput too low

Low throughput reduces the residence time and centrifugal separation efficiency, but specifically in automated modular purifiers, insufficient feed flow can trigger low-pressure alarms due to inadequate back-pressure or improper sensing loop parameters across the discharge paring disc.

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