The input power to a 220 V lap wound shunt D.C motor runs is 11 kW , the speed is 1150 rpm takes 5 A at no load ,shunt field resistance is 110 Q and armature resistance is 0.5 Q Find a-The speed of motor at this load b- The speed if connected resistance (25 Q) in series with field resistance when the armature torque is constant and the flux is proportional to field current .assume the information in branch a is normal condition.c-Maximum efficiency .before and after adding (R add)

The input power to a 220 V lap wound shunt D.C motor runs is 11 kW , the speed is 1150 rpm takes 5 A at no load ,shunt field resistance is 110 Q and armature resistance is 0.5 Q Find a-The speed of motor at this load b- The speed if connected resistance (25 Q) in series with field resistance when the armature torque is constant and the flux is proportional to field current .assume the information in branch a is normal condition.c-Maximum efficiency .before and after adding (R add)

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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