The Principles Of Dynamo Electric Machinery

Author : Benjamin Franklin Bailey
Publisher :
ISBN 13 : 9781332518036
Total Pages : 334 pages
Book Rating : 4.5/5 (18 download)

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Download or read book The Principles of Dynamo Electric Machinery (Classic Reprint) written by Benjamin Franklin Bailey and published by . This book was released on 2015-08-09 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Principles of Dynamo Electric Machinery The underlying purpose which the writer has had in mind throughout the preparation of this book is to present a clear physical conception of the phenomena which take place in electrical machinery. He has made but sparing use of mathematical demonstration, not because he does not believe in the value of mathematics to the engineer, but because he is firmly convinced that a clear physical idea of the actions which take place should be obtained before an attempt is made to apply mathematical analysis. This method of studying the subject is by no means easy either for the student or for the teacher. It is not easy for the student because it requires the development of his ability to think clearly and to express his ideas in logical language. It is not easy for the teacher, because while it is a simple matter to glance through a mathematical demonstration and pick out the errors, real teaching ability is required to guide the student so that he will form correct habits of thought, and to make some effort to determine whether or not he has a real understanding of the subject. Thus it is very easy to tell the student that two harmonic motions at 90 degrees in both time and space, combine to form a rotary motion. The student sees no objection to the statement, accepts it as true and very readily learns to repeat it. It is doubtful, however, whether he has materially increased his reasoning power. In fact, in the writer's opinion, he has decreased it and instead has taken a step toward acquiring the bad habit of accepting a statement as true "because the book says so." If, on the other hand, he has carefully studied the way in which the currents rise and fall in the conductors of a polyphase induction motor, and has mastered the way in which the current sheet and consequently the flux revolve around the stator, he has made a start toward acquiring a real power of analysis. This will stand him in good stead when in later years he is confronted with problems whose answer is not "in the back of the book." About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.