SIX-poleneratorsuppiand an induced voltage of 250 V. If this machine is now lap-connected and flux per poleincreasing by 20%, all other things remaining the same, calculate the e.m.f generated and

Answered: SIX-pole nerator suppi and an induced…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Question

SIX-pole
nerator
suppi
and an induced voltage of 250 V. If this machine is now lap-connected and flux per pole
increasing by 20%, all other things remaining the same, calculate the e.m.f generated and

Expert Solution

Step 1

Given data:

Poles, p = 6

Power, P = 12 kW

Terminal voltage, V = 240 V

Induced EMF, E = 250 V

The induced EMF of DC shunt generator is given as,

$E = \frac{p φ Z}{A} \times \frac{N}{60}$

Here p is the number of poles, φ is the flux per poles, Z is the number of conductors, A is the number of parallel paths and N is the speed of the generator in rpm.

Since only the winding connection and flux per poles are changing, assuming all other terms as constant.

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