International Library of Technology · Scranton, International Textbook Co. · leaf 210
07 ; i. e., the effective o? sqiiare-root-of-mean-square value is equal,to the maximuni value viultiplied by—-— 07 .707. Hereafter, in designating E. M. F.s and currents, the fol-lowing notation will be used to avoid confusion: E = maximum E. M. F.;E = effective or virtual E. M. F.;e =… … Fig. 1455. The dotted curve is obtained by squaring the ordinates of the sine curve, and the area of the dotted rectangle is equal to the area enclosed by the curve of squares. The height isof this ordinate is -^, and it represents the average of all the 2584 THEORY OF ALTERNATING values of e^. The…
Electrical engineering
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