International Library of Technology · Scranton, International Textbook Co. · leaf 225
ycles per second.What must be the E. M. F. furnished bythe alternator in order to set up a cur-rent of 10 amperes in the circuit ? Solution.—The required E. M. F.must be the resultant of the E. M. F.CR=200 necessary to overcome resistance, i. e.. Fig. 1467. R C = 20 X 10 = 200 volts, and that… … CURRENT APPARATUS. 2599 if = /2002 +376.8^ = 426.5, nearly. These E. M. F.s are related asshown in Fig. 1467, and the resultant E may either be found by calcula-tion as above or it may be scaled from the figure. The required E. M. F.which must be supplied by the alternator is, therefore, 426.5…
Electrical engineering
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