preparing this book the author has aimed to produce a laboratory manual suitable for general electrical-engineering work such as is covered during the Junior and Senior years in most American colleges of engineering. The experiments described cover the principal types of electrical machinery and auxiliary devices, as well as the most important commercial applications of electricity. Some knowledge of physics is assumed on the part of the student, and at least some elementary practice in a physical laboratory; but, for completeness of treatment several experiments are described recalling to the student's mind the fundamental physical laws of electricity and magnetism in their simpler practical aspects.The arrangement of the book is such as to make each chapter as far as possible independent; in this way the laboratory experiments may be performed in almost any desired order, to suit the equipment at band and the schedule of the class-room exercises. For the same reason cross-references have been avoided as much as possible. Each chapter covers one particular class of machinery or electrical relations; the experiments of the chapter are described in an ascending scale of difficulty or importance. For instance, the chapters on direct-current machines and on alternators are subdivided into (1) operating features, (2) commercial tests, and (3) a more advanced study of the magnetic circuit and armature windings. For easy reference, the experiments in each chapter bear the name of the chapter. Thus, the experiments in the third chapter are numbered: 3-A, 3-B, 3-C, etc.The laboratory schedule can be arranged, if desired, so as to cover all the experiments of a particular chapter in succession; but the author greatly prefers the so-called concentric disposition of the course. In accordance with this method the Junior-year course is made up of elementary experiments selected from nearly all the chapters of the book; the student being thus introduced to the whole domain of electrical engineering. Then during the first term of his Senior year he performs more advanced experiments relating to the same subjects.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.

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