A single-phase induction motor with a 4-pole, 50-Hz, 130-V, is rotating in the clockwise direction at a speed of 1450 rpm. Determine its per-unit slip (a) in the direction of rotation and (b) in the opposite direction. At standstill the rotor resistance is 15 Q, determine the effective rotor resistance in each branch.

A single-phase induction motor with a 4-pole, 50-Hz, 130-V, is rotating in the clockwise direction at a speed of 1450 rpm. Determine its per-unit slip (a) in the direction of rotation and (b) in the opposite direction. At standstill the rotor resistance is 15 Q, determine the effective rotor resistance in each branch.

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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