A 3 phase, 50 Hz, six pole induction motor has a rotor resistance of 0.1N and reactance of 0.92 N. Neglect the voltage drop in stator and assume that the rotor resistance is constant. Given that the full load slip is 3%, the ratio of maximum torque to full load torque is

A 3 phase, 50 Hz, six pole induction motor has a rotor resistance of 0.1N and reactance of 0.92 N. Neglect the voltage drop in stator and assume that the rotor resistance is constant. Given that the full load slip is 3%, the ratio of maximum torque to full load torque is

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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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

A 3 phase, 50 Hz, six pole induction motor has a rotor resistance of 0.1N and
reactance of 0.92 N. Neglect the voltage drop in stator and assume that the rotor
resistance is constant. Given that the full load slip is 3%, the ratio of maximum
torque to full load torque is

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