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 235
J SERIES iter: m SHUNT SERIESBRAKE BRAKE … BUTTON5 HALL BUTTONS Fig. 4,155.—Diagram of Darrin automatic push button controller. Ques. How is the armature resistance proportionedand why? Ans. It is in proportion to the horse power output of themotor at normal speed in order to make the acceleration assmooth as possible and at the same time…
Electrical engineering
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