The power factor of a synchronous motor is better than that of induction motor because
Correct answer: A. stator supply is relieved of responsibility of producing magnetic field
- 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
Explanation
The synchronous motor has a separate DC field, so the stator supply does not have to provide all the magnetizing current required to establish the air-gap field. Its excitation can also be adjusted, allowing a better power factor than a comparable induction motor.
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