Do C (i), (ii) and (iii) calculation (ii) the braking torque(iii) the torque when the speed is fallen to zero. (a) (i) Explain the concepts of constant speed drive and variable speed drive inelectric machine applications.(ii) List THREE (3) types of motor used in electrical drives.(b) Explain the concept of motoring and braking conditions of machine motor. Byappropriate expressions and diagrams might be required to support yourexplanations.(c) A 200 V, 1000 rpm, 100 A DC separately excited motor has an armatureresistance of 0.05 Ohm. The motor is set to be braked by plugging from aninitial speed of 1200 rpm. Determine;(i) the resistance to be placed at the armature circuit to limit the brakingcurrent to twice of the full load value.

Answered: Image /qna-images/answer/20f667e0-285a-4e36-bd13-b5f8608ad659.jpg

(c) A 200 V, 1000 rpm, 100 A DC separately excited motor has an armature resistance of 0.05 Ohm. The motor is set to be braked by plugging from an initial speed of 1200 rpm. Determine; (i) the resistance to be placed at the armature circuit to limit the braking current to twice of the full load value.

(c) A 200 V, 1000 rpm, 100 A DC separately excited motor has an armature resistance of 0.05 Ohm. The motor is set to be braked by plugging from an initial speed of 1200 rpm. Determine; (i) the resistance to be placed at the armature circuit to limit the braking current to twice of the full load value.

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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