Confused about calculating rpm for DC machines vs. AC machines

Forums Common electrical queries Confused about calculating rpm for DC machines vs. AC machines

This topic contains 0 replies, has 1 voice, and was last updated by  Susan Hsu 10 months, 3 weeks ago.

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    Susan Hsu
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    I know that for AC machines, rpm is calculated using RPM = (120 * Frequency) / # of poles in the motor, but you don’t need to consider the number of poles for DC machines. Why don’t you need to considered the number of poles for DC machines?

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