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 232
f cores and pole pieces. 212 HAWKINS ELECTRICITY Fig. 234 shows a combined core and pole piece made entirely of sheetiron punchings assembled and riveted together, and fig. 235, a core tobe used with separate pole piece. It should be noted that in both casesthere is a longitudinal slot extending… … PlG., 235.—Fort Wayne laminated core without pole piece, as used on large dynamos. It isconstructed of punchings from sheet iron, and riveted under pressure. The alternate endprojections and grooved base insure good mechanical union of metal in cast welding tomagnet frame. Reluctance between core…
Electrical engineering
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