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
t, or25 or60 cycle alternatingcurrent. ELECTRIC ELEVATORS 2,889 If the series field be heavy, the speed of the motor will increasevery materially when the series winding is cut out, and it may be nec-essary to provide an extra switch on the controller in order to give smoothacceleration. This is… … J SERIES iter: m SHUNT SERIESBRAKE BRAKE
Electrical engineering
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