A 230 V, 50 Hz, 4-pole, single-phase induction motor is rotating in the clockwise (forward) direction at a speed of 1425 -rpm. If the rotor resistance at standstill is 7.8 &ohm;. then the effective rotor resistance in the backward branch of the equivalent circuit will be

A 230 V, 50 Hz, 4-pole, single-phase induction motor is rotating in th

1.	A 230 V, 50 Hz, 4-pole, single-phase induction motor is rotating in the clockwise (forward) direction at a speed of 1425 -rpm. If the rotor resistance at standstill is 7.8 &ohm;. then the effective rotor resistance in the backward branch of the equivalent circuit will be
A.	2 &ohm;
B.	4 &ohm;
C.	78 &ohm;
D.	156 &ohm;
Answer» C. 78 &ohm;

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A 230 V, 50 Hz, 4-pole, single-phase induction motor is rotating in the clockwise (forward) direction at a speed of 1425 -rpm. If the rotor resistance at standstill is 7.8 &ohm;. then the effective rotor resistance in the backward branch of the equivalent circuit will be

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