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What is the synchronous speed of a 3-phase induction motor if has 8 poles and its frequency is 40 Hz?

What is the synchronous speed of a 3-phase induction motor if has 8 poles and its frequency is 40 Hz? Correct Answer 600 rpm

GiveNumber of poles of motor(P)=8 Frequency(f)=40 Hz Synchronous speed(Ns) = 120f/P Synchronous speed(Ns) = 600 rpm.

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