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| Author | : Charles Proteus Steinmetz |
| Publisher | : |
| Total Pages | : 364 |
| Release | : 1917 |
| Genre | : Electrical engineering |
| ISBN | : |
| Author | : Charles Proteus Steinmetz |
| Publisher | : |
| Total Pages | : 312 |
| Release | : 2008-06-01 |
| Genre | : |
| ISBN | : 9781436834902 |
This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.
| Author | : Charles Proteus Steinmetz |
| Publisher | : Nabu Press |
| Total Pages | : 326 |
| Release | : 2014-01-08 |
| Genre | : |
| ISBN | : 9781295481187 |
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Engineering Mathematics: A Series Of Lectures Delivered At Union College Charles Proteus Steinmetz McGraw-Hill, 1911 Mathematics
| Author | : Charles Proteus Steinmetz |
| Publisher | : |
| Total Pages | : |
| Release | : 1915 |
| Genre | : Electrical engineering |
| ISBN | : |
| Author | : A M Charles Proteus Steinmetz |
| Publisher | : Theclassics.Us |
| Total Pages | : 64 |
| Release | : 2013-09 |
| Genre | : |
| ISBN | : 9781230732954 |
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...problem whether a maximum of a minimum occurs, or neither. For instance, if the problem is to determine the speed at which the efficiency of a motor is a maximum, the solution: speed=0, obviously is not a maximum but a mimimum, as at zero speed the efficiency is zero. If the problem is, to find the current at which the output of an alternator is a maximum, the solution i = 0 obviously is a minimum, and of the other two solutions, ii and t2, the larger value, %%, again gives a minimum, zero output at short-circuit current, while the intermediate value i gives the maximum. 101. The extremes of a function, therefore, are determined by equating its differential quotient to zero, as is illustrated by the following examples: Example 4. In an impulse turbine, the speed of the jet (steam jet or water jet) is Si. At what peripheral speed S2 is the output a maximum. The impulse force is proportional to the relative speed of the jet and the rotating impulse wheel; that is, to (S1-S2). The power is impulse force times speed S2; hence, P = kS2Sy-S2), (3) and is an extreme for the value of S2, given by-r-r = 0; hence, do 2 Si-2S2=0 and S2=y: (4) that is, when the peripheral speed of the impulse wheel equals half the jet velocity. Example 5. In a transformer of constant impressed e.m.f. Co = 2300 volts; the constant loss, that is, loss which is independent of the output (iron loss), is Pt-= 500 watts. The internal resistance (primary and secondary combined) is r = 20 ohms. At what current i is the efficiency of the transformer a maximum; that is, the percentage loss, X, a minimum? The loss is P= Pt +ri2 = 500+20i2 (5) The power input is Pi =et = 2300i;.... (6) hence, the percentage loss is, x P, ei' n and this is an extreme for the value of current i, ..
| Author | : Chalmers tekniska högskola. Institutionen för elektricitetslära och elektrisk mätteknik |
| Publisher | : |
| Total Pages | : 514 |
| Release | : 1964 |
| Genre | : Electricity |
| ISBN | : |
| Author | : Metropolitan Toronto Central Library |
| Publisher | : |
| Total Pages | : 34 |
| Release | : 1970 |
| Genre | : |
| ISBN | : |
| Author | : Thomas Parke Hughes |
| Publisher | : JHU Press |
| Total Pages | : 492 |
| Release | : 1993-03 |
| Genre | : Science |
| ISBN | : 9780801846144 |
Awarded the Dexter Prize by the Society for the History of Technology, this book offers a comparative history of the evolution of modern electric power systems. It described large-scale technological change and demonstrates that technology cannot be understood unless placed in a cultural context.
| Author | : David Alan Grier |
| Publisher | : Princeton University Press |
| Total Pages | : 423 |
| Release | : 2013-11-01 |
| Genre | : Science |
| ISBN | : 1400849365 |
Before Palm Pilots and iPods, PCs and laptops, the term "computer" referred to the people who did scientific calculations by hand. These workers were neither calculating geniuses nor idiot savants but knowledgeable people who, in other circumstances, might have become scientists in their own right. When Computers Were Human represents the first in-depth account of this little-known, 200-year epoch in the history of science and technology. Beginning with the story of his own grandmother, who was trained as a human computer, David Alan Grier provides a poignant introduction to the wider world of women and men who did the hard computational labor of science. His grandmother's casual remark, "I wish I'd used my calculus," hinted at a career deferred and an education forgotten, a secret life unappreciated; like many highly educated women of her generation, she studied to become a human computer because nothing else would offer her a place in the scientific world. The book begins with the return of Halley's comet in 1758 and the effort of three French astronomers to compute its orbit. It ends four cycles later, with a UNIVAC electronic computer projecting the 1986 orbit. In between, Grier tells us about the surveyors of the French Revolution, describes the calculating machines of Charles Babbage, and guides the reader through the Great Depression to marvel at the giant computing room of the Works Progress Administration. When Computers Were Human is the sad but lyrical story of workers who gladly did the hard labor of research calculation in the hope that they might be part of the scientific community. In the end, they were rewarded by a new electronic machine that took the place and the name of those who were, once, the computers.
| Author | : Ravi P Agarwal |
| Publisher | : Springer |
| Total Pages | : 514 |
| Release | : 2014-11-11 |
| Genre | : Mathematics |
| ISBN | : 3319108700 |
The book records the essential discoveries of mathematical and computational scientists in chronological order, following the birth of ideas on the basis of prior ideas ad infinitum. The authors document the winding path of mathematical scholarship throughout history, and most importantly, the thought process of each individual that resulted in the mastery of their subject. The book implicitly addresses the nature and character of every scientist as one tries to understand their visible actions in both adverse and congenial environments. The authors hope that this will enable the reader to understand their mode of thinking, and perhaps even to emulate their virtues in life.
