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Q. |
A 3-phase ,400 V, 4-pole induction motor is fed from a 3-phase, 400V, 50 Hz supply and runs at 1440 rpm. The frequency of rotor emf is |
A. | 2hz |
B. | 50hz |
C. | 4hz |
D. | 0hz |
Answer» A. 2hz |
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