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Design of Polyphase Generators and Motors (Classic Reprint) by Henry M. Hobart (2015, Trade Paperback)
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Forgotten Books USA (5611)
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About this product
Product Identifiers
PublisherForgotten Books
ISBN-101330618114
ISBN-139781330618110
eBay Product ID (ePID)222693447
Product Key Features
Book TitleDesign of Polyphase Generators and Motors (Classic Reprint)
Number of Pages280 Pages
LanguageEnglish
Publication Year2015
TopicElectronics / General
IllustratorYes
GenreTechnology & Engineering
AuthorHenry M. Hobart
FormatTrade Paperback
Dimensions
Item Height0.6 in
Item Weight13.3 Oz
Item Length9 in
Item Width6 in
Additional Product Features
Intended AudienceTrade
SynopsisExcerpt from Design of Polyphase Generators and Motors Just as the design Of machinery for continuous electricity crystallizes around the design Of the commutator as a nucleus, so in the design Of polyphase generators, a discussion Of the pre determination Of the field excitation under various conditions Of load as regards amount and phase, serves as a basis for acquiring familiarity with the properties Of machines Of this class. The author has taken the opportunity Of presenting a. Method Of dealing with the subject Of the predetermination Of the required excitation for specified loads, which in his opinion conforms more closely with the actual occurrences than is the case with any other method with which he is acquainted. In dealing with the design Of polyphase induction motors, the calculations crystallize out around the circle ratio, and this may be considered the nucleus for the design. The insight as regards the actual occurrences in an induction motor which may be acquired by accustoming one's self to construct mentally its circle diagram, should, in the author's Opinion, justify a much wider use Of the circle diagram than is at present the case in America. The author desires to acknowledge the courtesy Of the Editor Of the General Electric Review for permission to employ in Chap ter VI, certain portions Of articles which the author first published in the columns Of that journal, and to. Mr. P. R. Fortin for assistance in the preparation Of the illustrations. 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., Excerpt from Design of Polyphase Generators and Motors During several recent years the author has given courses of lectures at three technical schools in London, on the subject of the design of electric machinery. These three schools were: the Northampton Institute of Technology; Faraday House; and University College. Various methods of procedure were employed and these ultimately developed into a general plan which (so far as it related to the subjects of Polyphase Generators and Polyphase Motors), has been followed in the present treatise. It was the author's experience that the students attending his lectures took an earnest interest in calculating designs of their own, in parallel with the working out of the typical design selected by the author for the purpose of his lectures. At the outset of the course, each member of the class was assigned the task of working out a design for a stipulated rated output, speed and pressure. Collectively, the designs undertaken by the class, constituted a series of machines, and co-operation was encouraged with a view to obtaining, at the conclusion of the course of lectures, a set of consistent designs. If a student encountered difficulty or doubt concerning some feature of his design, he was encouraged to compare notes with the students engaged in designing machines of the next larger and smaller ratings or the next higher and lower speeds. Ultimately the results for the entire group of designs were incorporated in a set of tables of which each student obtained blue prints. At two of these colleges, the "sandwich" system was in operation, that is to say, terms of attendance at the college were "sandwiched" with terms during which the student was employed in an electrical engineering works. 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.
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