The following figures give the O.C.C OF A DC shunt generator at 300 r.p.m 0 2 3 5 Field ampere Armature 7.5 Volt 92 132 162 183 6 190 7 212 a. Plot the O.C.C for 375 r.p.m and determine the voltage to which the machine will excite if field circuit resistance is 40ohm. Comment b. What additional resistance would have to be inserted in the field resistance to reduce the voltage to 200 volts at 375 r.p.m. Comment c. With and without the additional resistance, determine the load current supplied by the generator when its terminal voltage is 200v. Armature reaction is 2V and assume speed to be constant. Armature resistance is 0.4 ohm. Write your comment about the difference.

The following figures give the O.C.C OF A DC shunt generator at 300 r.p.m 0 2 3 5 Field ampere Armature 7.5 Volt 92 132 162 183 6 190 7 212 a. Plot the O.C.C for 375 r.p.m and determine the voltage to which the machine will excite if field circuit resistance is 40ohm. Comment b. What additional resistance would have to be inserted in the field resistance to reduce the voltage to 200 volts at 375 r.p.m. Comment c. With and without the additional resistance, determine the load current supplied by the generator when its terminal voltage is 200v. Armature reaction is 2V and assume speed to be constant. Armature resistance is 0.4 ohm. Write your comment about the difference.

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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