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


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