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 177
d by binding wires, soldered throughout their length. The commutator seg-ments are drop forged in the smaller, and hard drawn in the larger sizes. Radial brushesare used. The efficiency of this type machine is stated by the maker at from 80% to 90%»according to size. THE DYNAMO 157 The point to be… … ./- Fig. 163.—General Electric 16 K W multipolar dynamo designed to operate at moderate andslow speeds. The outer structure of the machirfe consists of a magnet frame having feetin one casting. Adjustment is provided for moving the machine on its bed plate to tightenthe belt. The field coils are…
Electrical engineering
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