A 4-pole, 3-phase induction motor operates from a supply whose frequency is 50 Hz. Calculate: The speed at which the magnetic field of the stator is rotating. The speed of the rotor when the slip is 0.04. The frequency of the rotor currents when the slip is 0.03.

A 4-pole, 3-phase induction motor operates from a supply whose frequency is 50 Hz. Calculate: The speed at which the magnetic field of the stator is rotating. The speed of the rotor when the slip is 0.04. The frequency of the rotor currents when the slip is 0.03.

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 28RQ: What are the advantages and disadvantages of using the following types of motors? shaded-pole...

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Concept explainers

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.

Question

A 4-pole, 3-phase induction motor operates from a supply whose frequency is 50 Hz. Calculate:

The speed at which the magnetic field of the stator is rotating.
The speed of the rotor when the slip is 0.04.
The frequency of the rotor currents when the slip is 0.03.
The frequency of the rotor currents at standstill.

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