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The speed-governing system consists of a speed-governor element which is sensitive to changes in rotational speed, or to changes in rotational speed and electric load, and other component elements required for controlling the fuel supplied to the engine. The speed-governing system, to meet the changes in power output as demanded by the load on the engine, meters the engine fuel supply in such a manner that speed tends to remain constant or to vary with the imposed load in a predetermined manner.

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