Question 106General Subjects - 1st Asst/Chief

The correct answer is C) Isochronous governors are able to maintain constant prime mover speed regardless of load by employing temporary speed droop. Explanation: An isochronous governor is a type of speed control governor that is designed to maintain a constant prime mover speed regardless of load changes. This is achieved by incorporating a temporary speed droop mechanism, which allows the governor to momentarily increase or decrease the fuel supply to the prime mover in response to load changes, before returning the speed to the set point. This temporary speed droop is a key characteristic of isochronous governors, as it allows them to maintain constant speed without the permanent speed droop exhibited by other types of governors. The other answer choices are incorrect because they describe characteristics of non-isochronous governors, which do not maintain constant speed regardless of load.