A steam driven 750 KW turbo generator has a rated speed of 1200 RPM. The over speed setting for this unit must not exceed __________.
Official USCG Answer & Rule Citation
Correct Answer: Option A — 1380 RPM
Marine generator overspeed governors are legally and operationally set to trip at 115 percent of rated speed, which calculates to 1380 RPM for a 1200 RPM rated unit.
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