Question 148General Subjects - Assistant Engineer

The correct answer is B) Stability. Stability refers to the ability of a speed control governor to maintain the prime mover's speed without hunting or oscillating. A stable governor can quickly respond to changes in load while maintaining a consistent engine speed. This is a crucial characteristic for marine engines and other prime movers that require precise speed control. The other options are incorrect because: A) Dead band refers to the range of input signals within which the governor does not respond. C) Promptness describes how quickly the governor responds to changes in load or input. D) Sensitivity refers to the governor's ability to detect and respond to small changes in speed.