Q. The damper winding in a synchronous motor is generally used __.

A
To provide starting torque only
B
To reduce noise level
C
To reduce eddy current
D
To prevent hunting and provide the starting torque
Solution:

The primary function of damper winding in a synchronous machine is to prevent the phenomenon called hunting. If load on a synchronous machine is changed suddenly, its power angle has to change accordingly. However, change in power angle doesn’t occur smoothly. The rotor starts swinging around the new power angle.

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