Question 244Motor Plants - 1st Asst/Chief
70% to passThe governor for an emergency diesel generator is shown in the illustration. When a large change in load results in a change in engine speed, which of the parts listed will be the FIRST governor component to react to the change in load? Illustration MO-0094
APiece #8
BPiece #9
CPiece #13
DPiece #21
AI Explanation
The correct answer is B) Piece #9. The governor's flyball mechanism (piece #9) is the first component to react to a change in engine speed. When the engine speed changes due to a change in load, the flyball mechanism immediately senses this change and initiates the governor's response to bring the engine speed back to the desired setpoint. The other components, such as the control linkage (piece #8), the pilot valve (piece #13), and the hydraulic actuator (piece #21), are responsible for translating the flyball mechanism's input into an adjustment of the engine's fuel supply, but the flyball mechanism is the initial sensing element that triggers the governor's corrective action.
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