. Explain how the pulsating mmf of a single-phase induction motor may be considered equivalent totwo oppositely-rotating fields. Develop an expression for the torque of the motor.A 125-W, 4-pole, 110-V, 50-Hz single-phase induction motor has the no-load rotational loss of 25watts and total rotor copper loss at rated load of 25 watts at a slip of 0.06.At a slip s = 0.06, what is the power input to the machine ?

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Answered: Explain how the pulsating mmf of a…

Explain how the pulsating mmf of a single-phase induction motor may be considered equivalent to two oppositely-rotating fields. Develop an expression for the torque of the motor.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter35: Harmonics 916

Section: Chapter Questions

Problem 3RQ: Would a positive-rotating harmonic or a negative-rotating harmonic be more harmful to an induction...

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Concept explainers

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.

Question

. Explain how the pulsating mmf of a single-phase induction motor may be considered equivalent to
two oppositely-rotating fields. Develop an expression for the torque of the motor.
A 125-W, 4-pole, 110-V, 50-Hz single-phase induction motor has the no-load rotational loss of 25
watts and total rotor copper loss at rated load of 25 watts at a slip of 0.06.
At a slip s = 0.06, what is the power input to the machine ?

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