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A 460 V, 25 hp, 60 Hz, wye-connected, four-pole induction motor has the following impedances in ohms per phase referred to the stator circuit: R1=0.641W, R2=0.332W, X1-1.106W, X2=0.464W, Xm=26.3W The total rotational losses are 1100 W and are assumed to be constant. Core losses are grouped with rotational losses. For a rotor slip of 2.2% at rated voltage and frequency, find the following motor quantities: a) Speed, b) Stator current, c) Power factor,

A 460 V, 25 hp, 60 Hz, wye-connected, four-pole induction motor has the following impedances in ohms per phase referred to the stator circuit: R1=0.641W, R2=0.332W, X1-1.106W, X2=0.464W, Xm=26.3W The total rotational losses are 1100 W and are assumed to be constant. Core losses are grouped with rotational losses. For a rotor slip of 2.2% at rated voltage and frequency, find the following motor quantities: a) Speed, b) Stator current, c) Power factor,

Introductory Circuit Analysis (13th Edition)
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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A 460 V, 25 hp, 60 Hz, wye-connected, four-pole induction motor has the following impedances in ohms per phase referred to the stator circuit: R1=0.641W, R2=0.332W, X1-1.106W, X2=0.464W, Xm=26.3W The total rotational losses are 1100 W and are assumed to be constant. Core losses are grouped with rotational losses. For a rotor slip of 2.2% at rated voltage and frequency, find the following motor quantities: a) Speed, b) Stator current, c) Power factor, d) Pd and Pout. e) td and tload f) Efficiency
Transcribed Image Text:A 460 V, 25 hp, 60 Hz, wye-connected, four-pole induction motor has the following impedances in ohms per phase referred to the stator circuit: R1=0.641W, R2=0.332W, X1-1.106W, X2=0.464W, Xm=26.3W The total rotational losses are 1100 W and are assumed to be constant. Core losses are grouped with rotational losses. For a rotor slip of 2.2% at rated voltage and frequency, find the following motor quantities: a) Speed, b) Stator current, c) Power factor, d) Pd and Pout. e) td and tload f) Efficiency
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