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 141
Figs. 391 and 392.—Action of the magnetic force in a dynamo and motor. In the firstinstance, according to Lenz law, the direction of the current induced in the wire is suchas to oppose the motion producing it. In the operation of a motor, the current suppliedin flowing through the armature winding…
Electrical engineering
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