Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 240
verage value of e X i or to EI cos a, the averagepower in the circuit. If in the circuit shown in Fig. 239 E = 100 volts / = 50 amp. W = 4000 watts, measured bj a wattmeter. . . actual power then the power factor of the circuit = r 1 apparent power 4000 ~ 100X50 = 0.8and the phase angle between… … —£ uuuu ;» vvvvv A^ .[Eg X R \Et -* TRRnnp—<-—wwv *- a IR J b A B Fig. 240.—Vector diagram for a transmission line. represented as in Fig. 240. Eg, the voltage at the generatingstation, is the vector sum of the terminal voltage Eh the resistancedrop IR and the reactance drop IX; the phase…
Electrical engineering
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