Practical electricity .. with questions and answers

492 Pages·2011·22.8 MB·English

K
Class
18
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COPYRIGHT DEPOSIT.
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A
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PRACTICAL
ELECTRICITY
Copyright 190I-I904-1908-I9II by QcveUnd Aimawre Works
AHP ANSWERS
QUESTIO^IS
SIXTH EpmoN'
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Pv'ess of
W. B. Conkcy Company
Hammond, Ind.
©CI.A28r,221
INTRODUCTORY.
In March, 1896, The Armature Winder made its first appear-
ance, its attractive feature being the commencement of a series of
lectures on designing dynamos and motors, these letters being
written from daily shop practice, and made comprehensible by
questions and their subsequent answers. As each paper with its
lecture made its appearance, the interest manifested by readers
became more pronounced, until we were flooded with inquiries for
numbers which thevarious readers had missed. As we had only
reserved a very few papers of each issue, our ability to supply
We
the back numbers was limited. consequently decided to
print the lectures in book form, and so notified our readers of
this decision, with the result that orders for the book came in, in
quantities which were beyond anything we had anticipated.
This evidence of the popularity of our efforts encouraged us in
compiling a work much more extensive and valuable than had at
firstbeenourintention. In orderto accomplish this, wefeltthene-
cessity of associatingwith usa man of greater technical knowledge
than we ourselves possessed, so that the work might be thoroughly
criticised and enlarged. We selected Mr. John C. Lincoln, an
electrical engineer of national reputation, who has contributed
articles to this book covering matters of great interest, and, so far
as we have been able to learn, ideas never before appearing in
print. We are obligated to Mr. C. E. F. Ahlm for assistance
rendered in preparing the chapter on electric automobiles.
CLEVELAND ARMATURE WORKS.
Clevelaiid. Ohio, 1911. James L. Mauldin / pPR^O^Pp^^.
Alvin a. Pifer
\
PiRKFACE.
This book was i^ritten especially to assist those who
have some practical knowledge of electricity and who wish
to learn more of the way in which wiring* is calculated and
of the simpler and more important parts of dynamo electric
machine design. Some of the methods used and explana-
tions advanced in the book are, so far as the writers know,
entirely new, and it has all been written with the idea of
illustrating the subject and making it las simple and as easy
of comprehension as possible. The only way to obtain a
working knowledge of the subject is by careful study. The
book has been arranged so that those who are willing to
devote some effort to the work can get a clear conception
of the more importlant ideas and laws that underlie the sub-
ject. One who studies the text and answers the questions
at the end of each chapter should be able to calculate a
wiring job for lig-hts or power; to calculate the proper size
and amount of wire for a dynamo when he has the dimen-
Bions of the niaehine; to calculate the size and winding for
0, magnet to give a required pull, etc.
The table of contents shows the scope of the work.
The q''jestions which follow each chapter, in connection
with the answers, will bring out the more important points
treated in each chapter. It is believed that a careful study
of the text and the working of the examples will serve to
throi;^ a great deal of light upon a subject in which a grea/t
many people are interested. Tlie dictionary in connection with
this work is a valuable feature.
Houston's Electrical* dictionary was largely used in the
preparation of same.
CLEVELAND ARMATURE WORKS.
CLEVELAND. OHIO.