Excerpt from A Text-Book of Electrical Engineering: Translated From the German The book is concerned almost exclusively with principles and does not enter into details of the practical construction of apparatus and machines. It is not intended to take the place of the standard works on the design of dynamo machinery, both direct and alternating, but rather to lay a thorough foundation which shall make the study of such works more profitable. 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.