Q 1// The magnetization characteristic of a shunt generator driven at 1000 r.p.m is follows: Field current (A) 0.5 5 1.5 102 2 112 2.5 3 EMF (V) 50 85 116 120 The field resistance and armature resistance are 50 2, 0.1 N respectively find :- 1- The additional resistance required in the field circuit to reduce the EMF to 75 V. 2- The volt lost due to armature reaction when armature current is 100 A at terminal voltage of 100 V. 3- When connected shunt generator has armature resistance 0.2 2, E.MF at no load is 90 V in parallel with above generator with same EMF at the field resistance 50 N and delivered total current 500 A Find the currents from each generator and voltage bus bar. Neglected shunt current,

Q 1// The magnetization characteristic of a shunt generator driven at 1000 r.p.m is follows: Field current (A) 0.5 5 1.5 102 2 112 2.5 3 EMF (V) 50 85 116 120 The field resistance and armature resistance are 50 2, 0.1 N respectively find :- 1- The additional resistance required in the field circuit to reduce the EMF to 75 V. 2- The volt lost due to armature reaction when armature current is 100 A at terminal voltage of 100 V. 3- When connected shunt generator has armature resistance 0.2 2, E.MF at no load is 90 V in parallel with above generator with same EMF at the field resistance 50 N and delivered total current 500 A Find the currents from each generator and voltage bus bar. Neglected shunt current,

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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Concept explainers

DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.

Question

Q 1// The magnetization characteristic of a shunt generator driven at 1000 r.p.m is follows:
1.5
102
2
112
2.5
Field current (A)
|EMF (V)
0.5
3
50
85
116
120
The field resistance and armature resistance are 50 2, 0.1 2 respectively find :-
1- The additional resistance required in the field circuit to reduce the EMF to 75 v.
2- The volt lost due to armature reaction when armature current is 100 A at terminal voltage of
100 V.
3- When connected shunt generator has armature resistance 0.2 2, E.MF at no load is 90 V in
parallel with above generator with same EMF at the field resistance 50 2 and delivered
total current 500 A Find the currents from each generator and voltage bus bar. Neglected
shunt current.

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