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 40
ELECTRICITY Tlie principles of polypJiase motors can be best understood bymeans of elementary diagrams illustrating the action of poly-phase currents in producing a rotating magnetic field, as ex-plained in the paragraphs following. Production of a Rotating Magnetic Field by Two PhaseCurrents.—Fig.… … TWO-PHASE ALTERNATOR Fig. 1,659.—Production of a rotating magnetic field by two phase currents. The figure represents an iron ring, wound with coils of insulated wire, and supplied with two phase c_at the four points A, B. C. and D. The action of the two phase current on the ring inproducing a…
Electrical engineering
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