Electrial Engineering MCQ on Synchronous Motors
The synchronous motor is not inherently self-starting since
- A rotating magnetic field does not have enough poles
- The force required to accelerate the rotor to the synchronous speed in an instant is absent
- The rotating magnetic field is produced by only 50 Hz frequency currents
- The starting device to accelerate the rotor to near synchronous speed is absent
Correct answer: 2. The force required to accelerate the rotor to the synchronous speed in an instant is absent