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1. |
A 3-phase, 400V, synchronous motor is providing load at 0.8 p.f. lagging. If the field current of the motor is continuously increased, then the _____________ |
A. | power factor increases and then decreases |
B. | power factor is not affected |
C. | power factor decreases upto a certain value of field current and then increases |
D. | power facor increases simply |
Answer» B. power factor is not affected | |