What type of governor device prevents the engine from over-speeding?

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Multiple Choice

What type of governor device prevents the engine from over-speeding?

Preventing the engine from over-speeding is achieved by a speed limit (speed limiter) device. A speed limit sets an upper bound on engine speed and works with the governor to cap RPM. As the engine approaches the set limit, the limiter reduces or cuts off fuel delivery to prevent further acceleration, keeping the engine from reaching dangerous speeds. This is why it’s the best answer: it actively prevents overspeed by establishing a maximum, rather than just aiming to hold speed around a target or reacting after overspeed has begun. A general speed governor regulates speed around a reference but doesn’t inherently cap maximum speed. Overspeed protection is a reactive safeguard that may engage after overspeed starts. A throttle stop is a mechanical limit on throttle travel, not an active RPM control.

Preventing the engine from over-speeding is achieved by a speed limit (speed limiter) device. A speed limit sets an upper bound on engine speed and works with the governor to cap RPM. As the engine approaches the set limit, the limiter reduces or cuts off fuel delivery to prevent further acceleration, keeping the engine from reaching dangerous speeds.

This is why it’s the best answer: it actively prevents overspeed by establishing a maximum, rather than just aiming to hold speed around a target or reacting after overspeed has begun. A general speed governor regulates speed around a reference but doesn’t inherently cap maximum speed. Overspeed protection is a reactive safeguard that may engage after overspeed starts. A throttle stop is a mechanical limit on throttle travel, not an active RPM control.

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