Question

For a shaded pole induction motor, the direction of rotation of the motor is
1. from the main pole to the shaded pole
2. from the shaded pole to the main pole
3. either (A) or (B) depending on the voltage
4. either (A) or (B) depending on the power factor

Answer 1

Correct Answer - Option 1 : from the main pole to the shaded pole

Shaded pole motor:

• The shaded pole induction motor is simply a self-starting single-phase induction motor whose one of the poles is shaded by the copper ring
• The copper ring is also called the shaded ring
• This copper ring act as a secondary winding for the motor
• The shaded pole motor rotates only in one particular direction, and the reverse movement of the motor is not possible
• The direction of rotation of the magnetic field is from the main (unshaded) pole to the shaded pole.

• The power losses are very high in the shaded pole induction motor
• The power factor of the motor is low
• The starting torque induces in the induction motor are also very low
• The efficiency is also very low