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 53
uments. 2,146 HAWKINS ELECTRICITY switchboard. Systems of this type are frequently adopted wherethe business is small in proportion to the length of the line. The principal disadvantage of such systems has always beenthat when one subscriber was called, all bells would ring, butthis fault is now… … fU5ES 5WITCH LEVER nab post DIRECT CURRtNT MOTOR GENERATOR ELECTRIC LAMPS TOREGULATE CURRENT OUTPIff IMPEDANCE COILALTERNATINGCUKRFNT FU5E5 •7\! ==HWITCH BLADE5•INSULATED HANDLE TO ELECTRIC LIGHT D.C TO SWITCHBOARD TO POWER yFROM CENTRAL
Electrical engineering
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