Electric Motors, Their Action, Control and Application - Couverture souple

Crocker, Crocker

Couverture souple

ISBN 10 : 1313953946 ISBN 13 : 9781313953948

Editeur : HardPress Ltd, 2013

Synopsis

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

A propos du livre

Présentation de l'éditeur

On the other hand, the operation of electrical machinery Jias received comparatively little attention. This latter fact appears to be anomalous when we consider that there are undoubtedly several hundred users for every designer or constructor of such apparatus, because each builder supplies a large number of customers. Hence the authors have endeavored to supply information that may be useful to those who operate or are interested in the operation of electric motors. Included among these are electrical engineers who install or run electric power plants, managers of manufacturing or other establishments in which electric devices are employed, as well as students and others who desire to acquaint themselves with the working of various kinds of electric motors and their application to useful purposes. The subject is necessarily technical because it involves not only the mechanical factors speed and torque but also the electrical quantities voltage, current and flux. Moreover, any or all of these five quantities may, in fact usually do, vary and are affected by other quantities or conditions. Hence the problems must be analyzed and solved with thoroughness to obtain results of real value and cannot be properly treated in a popular manner. Nevertheless care has been taken to introduce and explain each step or result as clearly as possible, and to illustrate each case, when feasible, by a specific numerical example based upon standard commercial motors. The general method herein adopted is an outgrowth of the course of lectures on electric motors and their applications given inC olumbia University. It is based upon the consideration of counter e.m.f. and its relation to impressed e.m.f. as the important criterion of motor action.
(Typographical errors above are due to OCR software and don't occur in the book.)

About the Publisher

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Détails de l'édition

• Éditeur: HardPress Ltd
• Date d'édition: 2013
• Langue: anglais
• ISBN 10: 1313953946
• ISBN 13: 9781313953948
• Reliure: Broché
• Nombre de pages: 360
• Coordonnées du fabricant: non disponible
• Personne responsable: non disponible