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 465
gs are cast on the upper half of the frame to which a suspension bar is bolted, 2,556 HAWKINS ELECTRICITY commutation segments, brushes, must be increased to proper sizefor the heavy current. A similar increase of dimension of thebearings, shaft, pinion, etc., must be made to secure proper work-ing… … Fig. 3,518.—Method of forced ventilation with internal air. In this arrangement there are noventilation openings to the outside air, the air being circulated internally in the motor, asshown. Ques. Name an important provision that should bemade in railway motor design. Ans. Some means of…
Electrical engineering
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