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 195
PlGS. 4,099 to 4,101.—Diagrams showing methods of speed changing in a typical one battery-unit, two motor circuit. The first speed shows the two motors in series, with a resistancecoil interposed; the second, the motors in series, without the resistance; the third, themotors in parallel. /«F… … 3» SREED mmrnw
Electrical engineering
Internet Archive · Brigham Young University · Public Domain Mark 1.0. Free to use for anything.
