The Practical Testing of Dynamos and Motors (Classic Reprint)

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Excerpt from The Practical Testing of Dynamos and Motors This little book is intended to serve as an elementary introduction to the study of the testing of continuous-current dynamo machinery. The use of mathematics has been avoided as far as possible, results and inferences being discussed in connection with curves obtained in the experiments. It is hoped that the descriptions of the experiments comprised in the following pages may be found useful by students, by assistants in testing rooms, and by the rapidly increasing number of engineers who are only slightly acquainted with electrical work, but who are brought into contact with electrical machinery, and wish to be able to check the performance of the machines under their charge. Advantage has been taken of the issue of a second edition to thoroughly revise the original matter, and to make substantial additions amounting in all to about one-quarter of the present text. The section dealing with the determination of the losses in dynamos and motors has been entirely re-written, and several methods which have shown themselves to be of value have been added. A description of Field's test for series motors and instructions for the parallel running of dynamos, as well as some additional and instructive experiments on shunt, series and compound motors, form the chief other additions. 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.