Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 36
,159. m WH0*iHl|ror M. m m Am i mr i ■m»m ALTERNATING CURRENT SYSTEMS 1,555 Two Phase Systems.—A two phase circuit is equivalent totwo single phase circuits. Either four or three wire may beemployed in transmitting two phase current, and even in thelatter instance the conditions are practically the… … TWO PHASE FOUR WIRE TRANSMISSION
Electrical engineering
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