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 555
otation -for reversing the switch is controlled by a double field winding in themotor, one part of which is cut out while the other is in circuit. 2,646 HAWKINS ELECTRICITY Blocks.—The length of block sections of any railroad willvary anywhere from one to two miles. To secure a maximumcapacity for… … SELECTOR GROUNDRESISTANCE TO BALANCE R£ STICKRELAY H CIRCUIT CONTROLLER ON SIGNALK -• LF ♦-Jo -^|l|l|l|l|l|l|lF- SIGNAL BATTERYJ
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
