Papers On Alternating Currents of Electricity for the Use of Students And Engineers
Papers On Alternating Currents of Electricity for the Use of Students And Engineers
Thomas Holmes Blakesley
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AI. CiL 82 ALTERNATING CURRENTS, Join BD, BF, which lines will be at right angles to AD, AF, respectively. Fig. 19. Then, calling for brevity the source of AB the source A, and the source of BO the source C, we have — AE.AF The power exerted by Source A = The power-doing work on Source C = 2R AE.FE 2R Thus work will be done upon C so long as E lies within the semicircle AFB, upon which F always lies. But if the coeflScient of self-induction is suflSciently increased, the angle DAF will open out..., and F will move along the circle towards A until FOB are in one straight line. This condition obtains when L is large enough to satisfy the equation, where 6 is the angle ABC, and AB = e, BO =/. If BO is so great that the point approaches the circumference, will for that reason alone cease to be THE TRANSMISSION OF POWER, 83: a recipient source, for the projection of BC upon the line of eflfective E.M.P. will either vanish, if the co- eflScient of self-induction is evanescent, or be positive if this latter has a finite value, in which case the source C does work.
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