and several subjects introduced which were not dealt with in the earlier editions. Among these may be mentioned the differential booster and the automatic voltage regulation of alternators. The sections dealing with single-phase commutator motors have been extended and rewritten. Descriptions of machines of obsolete types have been omitted.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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