In a synchronous motor, damper windings are provided on
A. rotor shaft.
B. stator frame.
C. pole faces.
D. none of the above.
Show Answer
Answer: D
Share your understanding of this question with the correct explanation.
The answer is C. pole faces.
Damper windings are provided on the pole faces of a synchronous motor. They are short-circuited windings that are used to start the motor and to prevent hunting.
When the motor is starting up, the damper windings create a rotating magnetic field that helps to start the rotor rotating. Once the rotor reaches synchronous speed, the damper windings do not create any torque. However, they are still there to help prevent hunting.
Here are some additional details about damper windings:
- They are short-circuited windings that are placed on the pole faces of a synchronous motor.
- They are used to start the motor and to prevent hunting.
- They do not create any torque when the motor is running at synchronous speed.
Damper windings are an important part of synchronous motors. They help to start the motor and to prevent hunting.
Here are the other options and why they are incorrect:
- A. Rotor shaft. The damper windings are not located on the rotor shaft. They are located on the pole faces.
- B. Stator frame. The damper windings are not located on the stator frame. They are located on the pole faces.
- D. None of the above. The damper windings are located on the pole faces of a synchronous motor.