Synchronous motor MCQ part 1. Electrical Engineering Multiple choice questions on Synchronous motors for interviews, job exams, and concept development.
Synchronous motors generally have
Synchronous motors generally have:
- Non-salient pole rotor
- Salient pole rotor
- Smooth cylindrical rotor
Correct answer: 2. Salient pole rotor
Which of the following is correct statement about the magnitude of field flux in 3 phase synchronous motor
Which of the following is correct statement about the magnitude of field flux in 3 phase synchronous motor:
- It varies with load
- It varies with power factor
- It varies with speed
- It remains constant at all loads
Correct answer: 4. It remains constant at all loads
The starting torque of a 3 phase synchronous motor is
The starting torque of a 3 phase synchronous motor is:
- Zero
- Low
- High
- Very high
Correct answer: 1. Zero
During short circuit test on motor which of the following terminals are short circuited
During short circuit test on motor which of the following terminals are short circuited:
- Armature terminals
- Field terminals
- One phase of stator winding
- Two phases of stator winding
Correct answer: 1. Armature terminals
In 3 phase induction motor the dc supply for excitation purposes is required
In 3 phase induction motor the dc supply for excitation purposes is required:
- For starting purposes only
- Continuously
- After starting
- None of these
Correct answer: 2. Continuously