In D.C motor the percentage of residual magnetism is
In D.C motor the percentage of residual magnetism is
Right Answer is:
2 – 3%
SOLUTION
- Residual magnetism is the amount of magnetization left behind after an external magnetic field is switched off.
- The amount of residual magnetization is about 2-3% in DC motor.
- This residual magnetism helps in the starting of the motor