The correct answer is: A. Repulsion motor
A repulsion motor is a type of electric motor that has two separate windings on the motor. One winding is the stator winding, which is the stationary part of the motor. The other winding is the rotor winding, which is the rotating part of the motor. The stator winding is connected to an AC power source, and the rotor winding is connected to a DC power source. When the AC power is turned on, it creates a magnetic field in the stator winding. This magnetic field induces a current in the rotor winding. The current in the rotor winding creates its own magnetic field, which interacts with the magnetic field of the stator winding. This interaction causes the rotor to rotate.
Repulsion motors are relatively simple and inexpensive to manufacture. They are also relatively efficient and have a good power-to-weight ratio. However, they are not as common as other types of motors, such as induction motors. This is because they are not as reliable as induction motors and they can be more difficult to control.
Repulsion motors are used in a variety of applications, including fans, pumps, and blowers. They are also used in some types of electric vehicles, such as golf carts and forklifts.
B. Repulsion induction motor
A repulsion induction motor is a type of electric motor that combines the features of a repulsion motor and an induction motor. It has two windings on the rotor, one of which is connected to a DC power source and the other of which is connected to an AC power source. The DC power source creates a magnetic field in the rotor winding, which induces a current in the AC winding. The current in the AC winding creates its own magnetic field, which interacts with the magnetic field of the stator winding. This interaction causes the rotor to rotate.
Repulsion induction motors are more efficient than repulsion motors and they are easier to control. However, they are more expensive to manufacture. They are used in a variety of applications, including fans, pumps, and blowers.
C. Repulsion start induction run motor
A repulsion start induction run motor is a type of electric motor that starts as a repulsion motor and then runs as an induction motor. It has two windings on the rotor, one of which is connected to a DC power source and the other of which is connected to an AC power source. The DC power source creates a magnetic field in the rotor winding, which induces a current in the AC winding. The current in the AC winding creates its own magnetic field, which interacts with the magnetic field of the stator winding. This interaction causes the rotor to rotate.
Once the rotor is rotating, the DC power source is turned off. The rotor then continues to rotate as an induction motor. Repulsion start induction run motors are more efficient than repulsion motors and they are easier to control. However, they are more expensive to manufacture. They are used in a variety of applications, including fans, pumps, and blowers.
D. None of the above
None of the above options are correct. The correct answer is: A. Repulsion motor