Answered: 1. Calculate the synchronous speed of…

1. Calculate the synchronous speed of 60-Hz induction motors having four poles 2. Calculate the mechanical speed of a 60-Hz, 14-pole motor if the slip is 5%.

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

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

1. Calculate the synchronous speed of 60-Hz induction motors having four poles.
2. Calculate the mechanical speed of a 60-Hz, 14-pole motor if the slip is 5%.

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