The locked rotor current of a shaded pole motor is

The locked rotor current of a shaded pole motor is

Right Answer is:

Slightly more than full load current

SOLUTION

Locked rotor current is basically the current drawn by the motor at its rated voltage when its rotor is kept stationary or in other words rotor is not spinning or rotating. So when we start a motor, its rotor is already at rest. This means, starting current and locked rotor current should be the same. Under this condition, the rotor winding cut the rotating flux without rotating which is equivalent to the short circuit of a transformer secondary.

In the shaded pole motor, its stalled locked rotor current is slightly more than the rated current so that it can even remain stalled or stand still for short period without any harm.

Scroll to Top