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 38
1,257, or the two circuits may becoupled at a common middle as in fig. 1,258, or the two circuitsmay be coupled in the armature so that only three collectorrings are required as shown in fig. 1,259. - HAWKINS ELECTRICITY Three Phase Current.—A three phase current c<three alternating currents of… … ■ Pic. 1.260.—Rlrmrntary three loop alternator and sine curves alter- nating current. If the loops be placed on the alternator an from one another, the current in each •■* maximum at a point one-third of a Ode distant from the other two. The arrangement here shown gives three inder-single phase…
Electrical engineering
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