The jacking/turning gear mechanism of a main propulsion geared turbine installation is normally connected through mechanical linkage to the _______.
Official USCG Answer & Rule Citation
Correct Answer: Option A — high speed pinion rotor
The jacking or turning gear connects to the high-speed pinion of the high-pressure reduction gear train. This high gear ratio multiplication allows a small electric motor to easily rotate the heavy turbine rotor.
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