Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 83
he number Ri R-i Rs in parallel. The resistance R being equal to pressed as 1 i2 = : . JL J_ J_ R\ R-: Ri Applying this to our i)roblem, 1 1 1 100 R = 1 l_ 1 11 1 ~ 9 1 1 Ri Ro 20 25 100 = 11.11 ohms, the same as obtained by the other two methods of working the problem.The foregoing expression will… … Fig. so.—Three unequal resistances in jiarallel. results by the joint-resistance formula, and indicate what each ammeterwill read. In this problem. Fig. 80, , E 360 /1 = — = — =40 amperes;/A 9 , E 360 /•> = — — —=24 uiui)eres;R, If) and , K 300^^IT:^^^^ amperes; /l3 iSU I = Ii+I,+Iz =…
Electric machinery
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