Correct option is D
Function of a centrifugal switch: In a resistance-start motor, the centrifugal switch is designed to disconnect the start winding once the motor reaches a certain speed, allowing it to operate solely on the run winding for efficient operation at normal speeds.
Starting process: When the motor first starts, the start winding is connected in series with the run winding to provide additional torque for initial acceleration.
Switch action: As the motor speeds up, the centrifugal force generated by the rotating rotor causes the switch to open, effectively disconnecting the start winding from the circuit.
