Resistance start
Capacitor start capacitor run
Shaded pole
Universal
Answer is Right!
Answer is Wrong!
The correct answer is: C. Shaded pole
A shaded pole motor is a
single-phase induction motor that uses a shading coil to create a rotating magnetic field. The shading coil is a copper winding that is placed around one of the poles of the stator. When current flows through the shading coil, it creates a magnetic field that opposes the main magnetic field. This causes the rotor to start rotating.Shaded pole motors are simple and inexpensive to manufacture, making them ideal for use in low-power applications such as time phonographs. They are also very reliable and have a long lifespan.
The other options are incorrect because:
- A resistance start motor uses a resistor to start the motor. This type of motor is not as efficient as a shaded pole motor.
- A capacitor start capacitor run motor uses a capacitor to start the motor and a capacitor to run the motor. This type of motor is more efficient than a resistance start motor, but it is also more expensive.
- A universal motor can be used on both single-phase and three-phase power. This type of motor is not as common as a shaded pole motor, and it is not typically used in time phonographs.