Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 61
obe by the base line. Thus -Eflv = X Em sin ada 7Z COS <=^£». (3) 7: 7t ^ TZ Substituting the value of £^, there results the averageE.M.F. induced in the loop of s conductors V Ky =2$^5 —IO-« volts. (4) If this loop be provided with a commutator as explainedin the foregoing section,the direction… … 50 DYNAMO ELECTRIC MACHINERY. E. M. F. therein will be the same as that in the first, butcorresponding instantaneous values in the two loops occur 90° apart, as shown inFig. 19. The resultingelectromotive force at anyinstant may be found byadding the E.M.F.s in-duced in the two loops atthat…
Electric machinery
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