Excerpt from Electric Railway Engineering To students in technical universities who wish to specialize in the subject of electrical railway engineering and to those who understand the fundamental principles of electrical engineering and are interested in their application to electric railway practice it is hoped that this book may be of value. While it is planned primarily for a senior elective course in a technical university, it does not involve higher mathematics and should therefore be easily understood by the undergraduate reader. The volume does not purport to present any great amount of new material nor principles, but it does gather in convenient form present day theory and practice in all important branches of electric railway engineering. N o apology is deemed necessary for the frequent quotations from technical papers and publications in engineering periodicals, for it is only from the authorities and specialists in particular phases of the profession that the most valuable information can be obtained, and it is believed that a thorough and unprejudiced summary of the best that has been written upon the various aspects of the subject will be most welcome when thus combined into a single volume. The author wishes to express his appreciation of the assistance of Mr. Emrick, instructor in electrical engineering at Purdue University, in preparing illustrations for the book and to those students who by thesis investigations have added to its value. 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.