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 216
service of lighting and battery charging? Ans. It is furnished with alternative compound winding,in which the series winding is provided with a switch, which 196 HAWKINS ELECTRICITY may be fixed either upon the machine itself or upon the switch-board. This switch permits the series coils to be… … EXCITER MAIN CIRCUIT 5*SG. 198.—Separately excited dynamo. Current for field excitation is supplied by a secondand smaller generator. Separately Excited Dynamos.—In this class of machinethe current required to excite the field magnets is obtainedIrom some independent external source. Though used…
Electrical engineering
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