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 59
ators whoset up the desired numbers by pressing keys. 2,152 HAWKINS ELECTRICITY Ques. What happens when the receiver is removedfrom the hook at a subscribers automatic station asshown in fig. 2,964? Ans. The bell is switched out and the transmitter, receiver,and impulse springs are thrown across…
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-432-266.webp)
