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 169
tor Torque and Speed.—The character of the work to be done not only determines the con-dition of the motor torque and speed required, but also thesuitability of a particular type of motor for a given service.There are three general classes of work performed by motors, andthese require the following… … MAIN CIRCUIT Pig. 429.—Two path method of speed regulation of series motor. A rheostat is connectedin shunt to the field coils as shown. The current passing from a to b divides between themagnet coils and the rheostat coils; the higher the resistance of the rheostat the lesscurrent passes through…
Electrical engineering
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