Answered: n a 110-V compound generator, the…

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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Question

In a 110-V compound generator, the resistances of the armature, field and series
windings are 0.06Ω, 25Ω and 0.04Ω respectively. The load consists of 200 lamps
each rated at 55 W, 110 V. Find the total electromotive force and the output
power when the machine is connected:

a. long shunt, 2.1a EMF and 2.1b Po
b. short shunt, 2.2a EMF and 2.2b Po

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Problem Solving
2. In a 110-V compound generator, the resistances of the armature, field and series
I.
windings are 0.060, 252 and 0.042 respectively. The load consists of 200 lamps
each rated at 55 W, 110 V. Find the total electromotive force and the output
signed
power when the machine is connected:
2.1. long shunt, 2.1a EMF and 2.1b Po
2.2. short shunt, 2.2a EMF and 2.2b Po
Bo
10
Ignore armature reaction and brush drop.
3. Two shunt dc generators are connected in parallel to supply a load of 5000 A.,
each machine has a resistance of 0.03 ohms and a field resistance of 60 ohms
but the emf of one machine is 600 volts and the other one 500 volts,
3.1.
draw the circuit diagram, and
find:
3.2.
the total current of the generator
3.3.
the power does each machine supply.
Jr
Ad
4. A dc shunt motor runs at 600 rpm on a 240 volts supply while driving a line current of 30 A.
Its armature and field resistances are 0.5 ohms and 120 ohms respectively,
Draw the9grcuit diagram
what resistance should be placed in series with the armature circuit in
4.1.
4.2.

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