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 234
e core, making a good joint, both mechanically andelectrically. By this construction, the continuity, of the magneticcircuit is practically unbroken save for the air gap between the polepiece and armature. Fig. 236 shows a one piece frame of a six pole dynamo having castwelded into it, combined… … Fig. 237.—Lundell type of combined core and pole piece; a combination of Graviers un-symmetrical horns and longitudinal slot designed to prevent distortion of field. The Magnetizing Coils.—The object of the magnetizingcoils, is to provide, under the various conditions of operation,the number of…
Electrical engineering
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