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 231
wn speed, 2, normal speed, obtained by cutting out thearmature resistance step by step, and 3, high speed, obtainedby inserting resistance in the shunt field. ELECTRIC ELEVATORS 2,885 The slow down speed is not a running speed, but is only used for mak-ing accurate landings. Ques. What are the… … SPttD GOVERNOR Pig. 4,151.—Diagram of Electron direct current two speed magnet controller. A further advantage of shunt field control is found in the fact thatit permits the car to be slowed down, regardless of load, enabling theoperator to make more accurate landings and rendering the operationof…
Electrical engineering
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