Bulletin Of The Bureau Of Standards Vol 6

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Publisher : Forgotten Books
ISBN 13 : 9780483274594
Total Pages : 656 pages
Book Rating : 4.2/5 (745 download)

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Download or read book Bulletin of the Bureau of Standards, Vol. 6 written by and published by Forgotten Books. This book was released on 2018-01-17 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Bulletin of the Bureau of Standards, Vol. 6: S. W. Stratton, Director, 1909-10 The ratio Of E, to E, is known as the ratio Of a potential trans former, and in general it differs appreciably from the ratio of E, ' to E, ' which is the ratio Of primary to secondary turns. The phase-angle between E, and E, reversed is the angle which it is proposed to measure. This may be either positive or negative. If no current be taken from the secondary, E, becomes identical with E, ' N, I becomes identical with N, M I r, becomes smaller and farther from E, ' in phase; the ratio is more nearly the ratio of turns; the secondary emf. Is in advance of the primary. As the secondary current is increased the Ohmic drop in the sec ondary increases and E decreases; I, must increase to maintain M I r, increases and comes more nearly into phase with E, ' hence E, must be increased to maintain the same magnetic conditions, or if E, be maintained constant the flux decreases and E, suffers further contraction, so that the ratio is increased; as, will in general increase and the phase angle will approach zero and finally become negative. 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.