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 532
the smaller machines, or by 3,186 HAWKINS ELECTRICITY electric motor drive in the case of large high speed machines. The out-side or revolving plates in this particular machine are constructed of apatent fibrous material in the form of a sheet, which extend over theentire area of the plate and are… … Fig. 4,607.—Toepler-Holtz influence machine. Its principle of operation is induction. Inoperation, an initial charge is required. This is given to one of the metallic surfacedfield plates, cemented to the stationary plate. When the outside plates are revolved, thetinfoil buttons—current carriers,…
Electrical engineering
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