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 214
otor, the load, speed and effi-ciency of the system must be considered. Since it is customaryto counterbalance the weight of the car and part of the loadthis must be taken into account, that is, only the unbalanced 2.868 HAWKINS ELECTRICITY load is considered. Accordingly the horse power required… … Fig. 4,131.—Warner direct current motor. It is compound wound, having heavy series fieldwindings. .The series windings are used for starting only, and are cut out of circuit as themotor attains its normal speed, in order to give the constant speed characteristic of thesimple shunt motor. The…
Electrical engineering
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