Synopsis
This is a pre-1923 historical reproduction that was curated for quality. Quality was conducted on each of these books in an attempt to remove books with imperfections introduced by the digitization process. Though we have made best efforts - the books may have occasional errors that do not impede the reading experience. We believe this work is turally important and have elected to bring the book back into print as part of our continuing commitment to the preservation of printed works worldwide.
Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.
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
Forgotten Books is a publisher of historical writings, such as: Philosophy,
Présentation de l'éditeur
This is a pre-1923 historical reproduction that was curated for quality. Quality assurance was conducted on each of these books in an attempt to remove books with imperfections introduced by the digitization process. Though we have made best efforts - the books may have occasional errors that do not impede the reading experience. We believe this work is culturally important and have elected to bring the book back into print as part of our continuing commitment to the preservation of printed works worldwide. This text refers to the Bibliobazaar edition.
Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.
