Comparison of Alternating-Current and Direct-Current Metallic Arc-Welded Joints

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Excerpt from Comparison of Alternating-Current and Direct-Current Metallic Arc-Welded Joints: A ThesisTwo types of metallic arc - welding machine are in gen eral use at the present time, classified according to the characteristics of the electrical current used to produce the arc, namely, alternating - current and direct-current welders. The alternating type can be further divided into the generator type and the transformer type.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.