Question 103General Subjects - 1st Asst/Chief

The correct answer is D. An isochronous governor is ideally suited for a ship's service alternator drive associated with maintaining a constant system frequency. This is because an isochronous governor is designed to precisely control the speed of the prime mover, such as an engine, to ensure that the electrical frequency of the generated power remains constant, regardless of changes in load. This is crucial for maintaining the stability and reliability of the ship's electrical system. The other options are incorrect because an isochronous governor is not specifically designed for the applications described in A, B, and C. Those applications would typically require different types of governors or control systems to achieve the desired performance.