The power factor of a synchronous motor is better than that of induction motor because
A)stator supply is relieved of responsibility of producing magnetic field
B)mechanical load on the motor can be adjusted
C)synchronous motor runs at synchronous speed
D)synchronous motor has large air gap

Question

Quizplus · Accepted Answer

The power factor of a synchronous motor is often better than that of an induction motor because in a synchronous motor, the excitation can be adjusted. This allows the stator supply to be relieved of the responsibility of producing the magnetic field, enabling the motor to operate at a power factor that can be varied and even made leading or unity, depending on the excitation level. This is not the case with induction motors, where the power factor is typically lagging and cannot be easily adjusted.

The Power Factor of a Synchronous Motor Is Better Than