Which of the following statements is true concerning the application for an isochronous governor?

Correct Answer: Option D — An isochronous governor is ideally suited for a ship's service alternator drive associated with maintaining a constant system frequency.

Isochronous governors maintain a constant speed regardless of load. This is critical for ship service alternators to ensure the electrical system maintains a constant frequency (60Hz), preventing damage to sensitive electronic equipment and ensuring proper synchronization of generators operating in parallel across the vessel's electrical distribution bus.