A 230 V, 50 Hz, 4 pole, single-phase induction motor is rotating in the clockwise (forward) direction at a speed of 1,425 rpm.
If the rotor resistance at standstill is 7.8 Ω, then the effective rotor resistance in the backward branch of the equivalent circuit will be
A. 2 Ω
B. 4 Ω
C. 78 Ω
D. 156 Ω
Show Answer
Answer: B
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