The correct answer is: A. disconnects auxiliary winding of the motor.
A centrifugal switch is a safety device used in single-phase motors to prevent the motor from running when it is not running at full speed. It does this by disconnecting the auxiliary winding of the motor when the motor is not running at full speed. The auxiliary winding is used to start the motor, but it is not needed to keep the motor running once it is up to speed.
The centrifugal switch is a small, spring-loaded device that is mounted on the motor shaft. When the motor is turned on, the centrifugal switch is closed and the auxiliary winding is energized. This causes the motor to start. As the motor speeds up, the centrifugal switch opens and the auxiliary winding is de-energized. This prevents the auxiliary winding from overheating.
The centrifugal switch is an important safety device that helps to prevent damage to the motor. It is important to make sure that the centrifugal switch is working properly before using the motor.
Here is a brief explanation of each option:
- Option A: Disconnects auxiliary winding of the motor. This is the correct answer. The centrifugal switch disconnects the auxiliary winding of the motor when the motor is not running at full speed. This prevents the auxiliary winding from overheating.
- Option B: Disconnects main winding of the motor. This is incorrect. The centrifugal switch does not disconnect the main winding of the motor. The main winding is always energized, even when the motor is not running.
- Option C: Reconnects the main winding the motor. This is incorrect. The centrifugal switch does not reconnect the main winding of the motor. The main winding is always energized, even when the motor is not running.
- Option D: Reconnects the auxiliary winding of the motor. This is incorrect. The centrifugal switch does not reconnect the auxiliary winding of the motor. The auxiliary winding is only energized when the motor is starting.