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Speed regulation is the percentage of speed change, generally this is only calculated on devices which are attempting to maintain a constant speed. For example, on some industry motors, they need to maintain a constant RPM. When the motor has weight bearing on it, it is called a load, and the speed may change slightly.

Formula:

high speed (or no load) = nL

Lowest speed (or full load) = fL

(nL - fL) / fL x 100 = % regulation.

example: 1700 rpm no load, 1500 rpm full load.

(1700 - 1500) / 1500 x 100

= 200 / 1500 x 100

= 0.1333 x 100

= roughly 13% speed regulation.

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Q: What is speed regulation and state the formula?
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