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1. |
A 4 pole induction machine is working as an induction generator. The generator supply frequency is 60 Hz. The rotor current frequency is 5 Hz. The mechanical speed of the rotor in RPM is |
A. | 1350 |
B. | 1650 |
C. | 1950 |
D. | 2250 |
Answer» D. 2250 | |