A 20 hp, 250 V shunt motor has an armature circuit resistance (including brushes and interpoles) of0.22 Q. and a field resistance of 170 Q. At no-load and rated voltage, the speed is 1200 rpm andarmature current is 3.0 A. At full-load and rated voltage, the line current is 55 A, and the flux isreduced 6% (due to the effects of armature reaction) from its value at no-load. What is the full-loadspeed?100 гpm1220 грm1000 гpm120 гpm

Answered: Image /qna-images/answer/9db8946b-1f56-4eb0-992c-c1d6fe6e1640.jpg

Answered: О 1220 гpm

Engineering

Electrical Engineering

О 1220 гpm

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

A 20 hp, 250 V shunt motor has an armature circuit resistance (including brushes and interpoles) of
0.22 Q. and a field resistance of 170 Q. At no-load and rated voltage, the speed is 1200 rpm and
armature current is 3.0 A. At full-load and rated voltage, the line current is 55 A, and the flux is
reduced 6% (due to the effects of armature reaction) from its value at no-load. What is the full-load
speed?
100 гpm
1220 грm
1000 гpm
120 гpm

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