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), 1833-1928 · New York : T. Audel & Co. · leaf 190
al pressure at thatpoint. The curve lies above the horizontal axis during the first half of therevolution, and below it during the second half, which indicates thatthe current flows in one direction for a half revolution and in the oppositedirection during the remainder of the revolution. The… … aacd 55 > & S o o o^ >» h o a £ ca ^ a> .S3 w o fl-S Js-S CO -M Oi,3 In fig. 179, the loop A B C D is inthe vertical position at the beginningof the revolution At this instant theelectromotive force is zero, hence thesine curve as shown begins at E,the zero point—that is, on the axis…
Electrical engineering
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