Answer to Question #187662 in Engineering for Alock kumar

Question #187662

Prove that synchronous speed, Ns=120f/p, where f is the line frequency and p is the no of poles.

Expert's answer

"\\text{Cycles of current}=0.5p\\text{ Revolutions of field}\\\\\nf=0.5p\\frac{N_s}{60}\\\\N_s=\\frac{120f}{p}"

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