The cover image was created by the transcriber and is placed in the public domain.
[Pg i]
THE THOUGHT IS IN THE QUESTION THE INFORMATION IS IN THE ANSWER
HAWKINS
ELECTRICAL GUIDE
NUMBER
SIX
QUESTIONS
ANSWERS
&
ILLUSTRATIONS
A PROGRESSIVE COURSE OF STUDYFOR ENGINEERS, ELECTRICIANS, STUDENTSAND THOSE DESIRING TO ACQUIRE AWORKING KNOWLEDGE OF
ELECTRICITY AND ITS APPLICATIONS
A PRACTICAL TREATISE
by
HAWKINS AND STAFF
THEO. AUDEL & CO. 72 FIFTH AVE. NEW YORK.
[Pg ii]
COPYRIGHTED, 1914,
BYTHEO. AUDEL & CO.,
New York.
Printed in the United States.
[Pg iii]
TABLE OF CONTENTS
GUIDE NO. 6.
ALTERNATING CURRENT MOTORS1,267 to 1,376
Classification—synchronous    motors—essential parts—synchronous    motor principles: condition for starting;    effective pressure; dead centers; speed; limit    of lag; effect of load changes—effect of    altering the field strength—disadvantages of    synchronous motors; advantages—the "V"    curve—adaptation—efficiency—hunting    of synchronous motors; mechanical analogy—use as    condenser—surging—characteristics of synchronous    motors: starting; running; stopping; effect upon circuit; power    factor; auxiliary apparatus; adaptation—induction    (asynchronous) motors—essential    parts—types—oscillating magnetic    field—rotating magnetic field—operation    of single phase motor; why not self starting; provision    for starting—operation of polyphase induction motor;    why called asynchronous—speed; classification    according to speed—the terms primary and    secondary—why polyphase induction motors    are explained before single phase—polyphase    induction motors—features—essential    parts—principles—production of    rotating field—Tesla's rotating field—method of    obtaining resultant flux of Tesla's field—Arago's    rotations; explanation—Faraday's    experiment—production of two phase rotating field;    resultant poles—six and eight pole two phase rotating    fields—physical conception of two phase rotating    field—production of three phase rotating    field; with ring winding—physical conception    of three phase rotating field—three pha                        
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