A synchronous motor is operating on no load at unity power factor. If the field current is increased, the power factor will become
A. leading and the current will decrease.
B. lagging and the current will increase.
C. lagging and the current will decrease.
D. leading and the current will increase. [I.E.S. E.E.-II, 1998]
Answer:D
A synchronous motor is operating on no load at unity power factor. If the field current is increased, the power factor will become
A. leading and the current will decrease. B. lagging and the current will increase. C. lagging and the current will decrease. D. leading and the current will increase. [I.E.S. E.E.-II, 1998]