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The Elements Of Alternating Currents

Author : William Suddards Franklin
ISBN : 9781406784749
Genre : Technology & Engineering
File Size : 24.92 MB
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PREFACE TO SECOND EDITION. Two years use of Franklin and Williamsons Elements of Al- ternating Currents, and many valuable suggestions from friends, make it possible to issue a greatly improved edition, which is now offered to the public. It is not expected that this text will be found easy reading, but it is certain that any one of moderate ability can gain by serious study of this text a clear understand- ing of the principles of alternating currents and of the theory of the various types of alternating current machinery. Aside from the minor changes which occur on almost every page of the book, this new edition differs from the old in having a very complete series of practical problems with answers. The alterations in the chapters on the Alternator, on the Transformer, on the Synchronous Motor, on the Rotary Converter and on the Induction Motor, are especially noteworthy. The last five chapters have been added to give the student a general description of some of the ordinary types of alternating current apparatus and the conditions under which it is operated. These chapters are intended to be read in connection with the corresponding chapters that treat on the theory of the apparatus under consideration. The authors thanks are due to Professor Morgan Brooks for many valuable suggestions, to Messrs. C. M. Crawford and H. W. Brown for assistance in preparing copy, in solving problems and in reading proof, and to the manufacturing companies who have kindly furnished a number of the cuts used in the chapters that have been added. W. S. F. R. B. W. SOUTH BETHLEHEM, July 30, 1901. 238210 PREFACE TO FIRST EDITION. THIS book represents the experience of seven years teaching of alternating currents, and almost every chapter has been sub- jected repeatedly to the test of class-room use. The authors have endeavored to include in the text only those things which contribute to the fundamental understanding of the subject and those things which are of importance in the engineering practice of to-day. It may be taken for granted that the authors are deeply in- debted to Mr. C. P. Steinmetz, whose papers are unique in their close touch with engineering realities. W. S. F. SOUTH BETHLEHEM, June, 1899. vn
Category: Technology & Engineering

Patent Log Innovative Patents That Advanced The United States Navy

Author : Douglas E. Campbell
ISBN : 9781105625626
Genre : History
File Size : 64.71 MB
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Here are some 80+ patents that had an influence on the growth of the U.S. Navy - be it on, above or below the surface of the water. Each chapter is focused on important patents that shaped the growth of the Navy, be it in communications, navigation, surveillance, the ship's structure itself, weaponry, medical and life-saving, administration and miscellaneous. When we began researching the patents, the first few came easy - inventors like Edison, Bell, Burroughs, Seversky, Marconi, Morse, the Wright Brothers, Curtiss, Goodyear, Cousteau, Grumman, etc., easily made the first cut. Other inventors were harder to find yet their contribution to the advancement of the Navy was nonetheless important. One example would be the patented process of dive-bombing on enemy vessels using submarine torpedoes - patented in 1912! Another would be the catapult for launching aircraft off ships, patented in 1928.
Category: History

The Living Elements Of Healthy Building Design

Author : Janus Welton Aia Bbei Architect
ISBN : 9780595376063
Genre : Architecture
File Size : 21.96 MB
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Based on ten years of wide ranging study, "THE LIVING ELEMENTS OF HEALTHY BUILDING DESIGN" is the first in a series of guidebooks that accompany workshops of the same name to educate and clarify the impact of current building practices and materials on the indoor environment and human health in a form accessible to laypersons and professionals alike-from homeowner to non technical designer. To simplify and substantiate this wealth of information, the author organizes the material through the lens of the Living Elements: Earth, Metal, Water, Wood, Air, and Fire-emphasizing the interrelationship between human life, the earth, and the cosmos. This reference and its companion volumes (soon to be published) supports the concept of "Conscious Architecture," an innovative and integrated model of architecture and design that inspires harmonious structures, where natural elements purposefully intermingle with form, color, light, and sound to create holistic and healthy buildings that contain and reflect the wholeness of nature and its expression in the human spirit.
Category: Architecture

Dynamos And Dynamo Design

Author : International Correspondence Schools
ISBN : 1330219082
Genre : Technology & Engineering
File Size : 70.38 MB
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Excerpt from Dynamos and Dynamo Design: Direct Current Motors; Alternating Currents; Alternators; Alternating-Current Apparatus The International Library of Technology is the outgrowth of a large and increasing demand that has arisen for the Reference Libraries of the International Correspondence Schools on the part of those who are not students of the Schools. As the volumes composing this Library are all printed from the same plates used in printing the Reference Libraries above mentioned, a few words are necessary regarding the scope and purpose of the instruction imparted to the students of - and the class of students taught by - these Schools, in order to afford a clear understanding of their salient and unique features. The only requirement for admission to any of the courses offered by the International Correspondence Schools, is that the applicant shall be able to read the English language and to write it sufficiently well to make his written answers to the questions asked him intelligible. Each course is complete in itself, and no textbooks are required other than those prepared by the Schools for the particular course selected. The students themselves are from every class, trade, and profession and from every country; they are, almost without exception, busily engaged in some vocation, and can spare but little time for study, and that usually outside of their regular working hours. The information desired is such as can be immediately applied in practice, so that the student may be enabled to exchange his present vocation for a more congenial one, or to rise to a higher level in the one he now pursues. Furthermore, he wishes to obtain a good working knowledge of the subjects treated in the shortest time and in the most direct manner possible. 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.
Category: Technology & Engineering


Author : Columbia University
ISBN : PRNC:32101065109611
Genre :
File Size : 42.25 MB
Format : PDF, ePub
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