Starting winding of a single phase motor of a refrigerator is disconnected from the circuit by means of a

Magnetic relay
Thermal relay
Centrifugal switch
None of the above

The correct answer is C. Centrifugal switch.

A centrifugal switch is a switch that is used to disconnect the starting winding of a single phase motor when the motor reaches a certain speed. This is done to prevent the starting winding from overheating. The centrifugal switch is usually located on the motor shaft and is activated by centrifugal force.

A magnetic relay is a switch that is used to control a circuit by means of a magnetic field. The magnetic relay is usually used to control a high current circuit with a low current circuit.

A thermal relay is a switch that is used to protect a circuit from overheating. The thermal relay is usually used to control a motor by disconnecting the power to the motor if the motor overheats.

None of the

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above is not the correct answer because it does not specify which device is used to disconnect the starting winding of a single phase motor.
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