Steam Plants (Boilers & Turbines) USCG Question #749 (Set 25)

The over speed tripping device installed on an auxiliary turbine is automatically actuated by __________.

Official USCG Answer & Rule Citation

Correct Answer: Option A — centrifugal force

Standard auxiliary turbine overspeed safety devices utilize spring-restrained flyweights mounted on the shaft. When speed exceeds design limits, centrifugal force overcomes the spring tension, tripping the trip linkage and slamming the steam inlet valve shut.

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