Series motor takes (85 A) on full-load voltage (400 V) and runs at (10o00 r.p.m) the armature resistance is (0.18 Q) and the series winding resistance is (59m2). 1- Determine the resistance to be connected in series to reduce the speed to (710 r.p.m) with same current. 2- Determine the speed when developing full load torque but with a (0.16 Q) diverter in parallel with the field winding, then in this case, determine the maximum efficiency of the motor.

Series motor takes (85 A) on full-load voltage (400 V) and runs at (10o00 r.p.m) the armature resistance is (0.18 Q) and the series winding resistance is (59m2). 1- Determine the resistance to be connected in series to reduce the speed to (710 r.p.m) with same current. 2- Determine the speed when developing full load torque but with a (0.16 Q) diverter in parallel with the field winding, then in this case, determine the maximum efficiency of the motor.

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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