Electrical Engineering MCQ on Synchronous Motor
If field winding of an unloaded salient pole synchronous motor is open circuited, the motor will
If field winding of an unloaded salient pole synchronous motor is open circuited, the motor will
- Burn with dense smoke
- Function as static condenser
- Run as induction motor
- Stop
Correct answer: 4. Stop
Back EMF Of a synchronous motor depends on
Back EMF Of a synchronous motor depends on
- Load
- Load angle
- Speed
- All of these
Correct answer: 2. Load angle
The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is termed as
The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is termed as
- Pull-in torque
- Pull-out torque
- Pull-up torque
- None of these
Correct answer: 1. Pull-in torque
A synchronous motor develops maximum power for what value of load angle
A synchronous motor develops maximum power for what value of load angle
- 120°
- 45°
- 60°
- 90°
Correct answer: 4. 90°
The synchronizing power of synchronous machine is
The synchronizing power of synchronous machine is
- Directly proportional to the synchronous reactance
- Equal to the synchronous reactance
- Inversely proportional to the synchronous reactance
- None of these
Correct answer: 3. Inversely proportional to the synchronous reactance