Electrical Engineering MCQs on Synchronous Motor Part 14
If field circuit of an unloaded salient pole synchronous motor gets suddenly open-circuited then
If field circuit of an unloaded salient pole synchronous motor gets suddenly open-circuited then
- It continues to run at the same speed
- It runs at a slower speed
- It runs at a very high speed
- The motor stops
Correct answer: 4. The motor stops
The motor that is non self-starting
The motor that is non self-starting
- DC series motor
- Squirrel cage induction motor
- Synchronous motor
- Wound round induction motor
Correct answer: 3. Synchronous motor
A rotary converter can also be run as a
A rotary converter can also be run as a
- DC Compound motor
- DC Series motor
- DC Shunt motor
- Synchronous motor
Correct answer: 4. Synchronous motor
A synchronous motor is running with normal excitation. When load is increased, the armature current drawn by it increases since
A synchronous motor is running with normal excitation. When load is increased, the armature current drawn by it increases since
- Back EMF Becomes less than applied voltage
- Net resultant voltage in armature is increased
- Power factor is decreased
- Speed of the motor is reduced
Correct answer: 2. Net resultant voltage in armature is increased
Exciters of synchronous machines are
Exciters of synchronous machines are
- DC Compound machines
- DC Series machines
- DC Shunt machines
- Any of these
Correct answer: 3. DC Shunt machines