For the voltage built-up of a self- excited d.c. generator, which the following is not an essential condition? Armature speed must be very high Field winding mmf must aid the residual flux O There must be some residual flux Total field circuit resistance must be less than the critical value DC shunt generator may fail to generate in the case of Small resistance Existence of frequency O High speed Absence of residual flux

For the voltage built-up of a self- excited d.c. generator, which the following is not an essential condition? Armature speed must be very high Field winding mmf must aid the residual flux O There must be some residual flux Total field circuit resistance must be less than the critical value DC shunt generator may fail to generate in the case of Small resistance Existence of frequency O High speed Absence of residual flux

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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