A 3-f, 4-pole, 50Hz induction motor has no-load slip of 1% and full load slip of 2.5%. Calculate the no-load and full load RPM of the motor as well as the frequency of the rotor currents at standstill and full load.

A 3-f, 4-pole, 50Hz induction motor has no-load slip of 1% and full load slip of 2.5%. Calculate the no-load and full load RPM of the motor as well as the frequency of the rotor currents at standstill and full load.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 6RQ: Name three factors that determine the torque produced by an induction motor.

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Concept explainers

Stator and Rotor Magnetic Field

The stator and rotor magnetic field is the resulting magnetic field generated by a system of coils that are symmetrically aligned. They are supplied with polyphase currents. The magnetic field is generated by poly-phase (two or more phases) current or single-phase current. In the latter case, two field stator windings are supplied and two resulting electromagnetic fields are generated beyond the stage.

Question

A 3-f, 4-pole, 50Hz induction motor has no-load slip of 1% and full load slip of 2.5%. Calculate the no-load and full load RPM of
the motor as well as the frequency of the rotor currents at standstill and full load.

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