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 85
ral operator but centralcan hear P.B.X. 62. Short circuited trunk line condenser. 63. Short circuited jack springs. 64. Drop winding crossed with frame. Effect: Central gets steady light from P.B.X. 2,178 HAWKINS ELECTRICITY 65. Open station signal. 66. Open station jack contacts. 67. Open wire…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
