Excerpt from A Textbook on Mechanical and Electrical Engineering: Machine Design, Principles of Electricity and Magnetism, Electrical Measurements, Batteries, Applied Electricity; With Practical Questions and Examples All machines consist of different combinations of a few simple principles; and, in order to be successful, the designer must become thoroughly acquainted with these principles and the relation they bear to each other. A study of machines that have been built for similar work is of great assistance in suggesting ideas for the new machine. 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.