Question 150General Subjects - Assistant Engineer

The correct answer is B) If speed droop is permanent, the prime mover's final speed is different for each amount of loading. This is correct because permanent speed droop refers to a steady-state condition where the prime mover's final speed will be lower for higher loads. This is due to the design of the governor, which intentionally allows the speed to drop as the load increases to help maintain stability and share the load properly. If the speed droop were temporary, the final speed would eventually return to the same value regardless of the load. The other options are incorrect because they do not accurately describe the behavior of a prime mover with permanent speed droop.