MCQOPTIONS
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| 1. |
An 8-pole, 3-phase, 50 Hz induction motor is operating at a speed of 720 rpm. The frequency of the rotor current of the motor in Hz is __________ |
| A. | 2 |
| B. | 4 |
| C. | 3 |
| D. | 1 |
| Answer» B. 4 | |