The correct answer is: C. Repulsion start induction run motor.
A short-circuiter is a device that is used to short-circuit the starting winding of a repulsion start induction run motor. This is done to prevent the starting winding from overheating. The starting winding is only used for a short period of time, during the starting of the motor. Once the motor has started, the starting winding is disconnected from the power supply and the motor runs as an induction motor.
A repulsion motor is a type of electric motor that uses a stator and a rotor. The stator is the stationary part of the motor, and the rotor is the rotating part. The stator has two windings, a main winding and a starting winding. The main winding is connected to the power supply, and the starting winding is connected to a switch. When the switch is closed, current flows through both windings. This creates a magnetic field that causes the rotor to rotate.
A repulsion start induction run motor is a type of repulsion motor that uses a short-circuiter to short-circuit the starting winding after the motor has started. This is done to prevent the starting winding from overheating. The starting winding is only used for a short period of time, during the starting of the motor. Once the motor has started, the starting winding is disconnected from the power supply and the motor runs as an induction motor.
The advantage of a repulsion start induction run motor is that it has a high starting torque. This means that it can start heavy loads easily. The disadvantage of a repulsion start induction run motor is that it has a low efficiency. This means that it uses more power than other types of motors.