what is droop?

Answer Posted / chirag trivedi

A typical governor provides continuous adjudtment to a
throttle in an effort to maintain a constant speed. Drop
governor allows engine speed to drop when a load is applied
to the engine. The amount of droop is a characteristic of a
particular mechanical governor and is determined in a part
by a spring rate of the governor spring and the tension
applied to the control member by the governor spring.
Permanent droop(%)={[(measuring uncertainty in Hz)/50]/
[(stroke of control mechanism)/(maximum strope of control
mechanism)]}*100
Sorce IEC 60308

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