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 68
non isalmost imperceptible, but if the wire be in the form of a coil,the adjacent turns act inductively upon each other upon theprinciple of the mutual induction arising between two separateadjacent circuits. 280 HAWKINS ELECTRICITY Ques. What effect has self-induction on the operationof a dynamo?… … Fig. 298.—Distribution of magnetic lines through a ring armature. Since the lines follow themetal of the ring instead of penetrating the interior, no electromotive force is inducedin that portion of the winding lying on the interior surface of the ring. There is, there-fore, a large amount of dead…
Electrical engineering
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