1.

A balanced three-phase, 50 Hz voltage is applied to a 3 phase, 4 pole, induction motor. When the motor is delivering rated output, the slip is found to be 0.05. The speed of the rotor m.m.f. relative to the rotor, structure is

A. 1500 r.p.m
B. 1425 r.p.m
C. 25 r.p.m
D. 75 r.p.m
Answer» E.


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