(b) An 8-pole, lap-connected armature has 960 conductors, a flux of 40mwb per pole, and a speed of 400 rpm. Calculate the e.m.f. generated on open-circuit. (c) If the armature in (b) were wave-connected for 2 circuit, at what speed must it be driven to generate 400V.

(b) An 8-pole, lap-connected armature has 960 conductors, a flux of 40mwb per pole, and a speed of 400 rpm. Calculate the e.m.f. generated on open-circuit. (c) If the armature in (b) were wave-connected for 2 circuit, at what speed must it be driven to generate 400V.

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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Concept explainers

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.

Question

(b) An 8-pole, lap-connected armature has 960 conductors, a flux of 40mwb per pole, and a
speed of 400 rpm. Calculate the e.m.f. generated on open-circuit.
(c) If the armature in (b) were wave-connected for 2 circuit, at what speed must it be
driven to generate 400V.

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