Dynamos and motors; a text book for colleges and technical schools (1911)
Franklin, William S. (William Suddards), 1863-1930, Esty, William, 1868-1928 · New York The Macmillan company · leaf 159
148 DYNAMOS AND MOTORS. ii^( = (i>Z//) is small when the speed is small. By using twomotors on a car, and arranging to have thern connected in seriesat starting and at low speeds, the counter-electromotive force isdoubled, and the efficiency is nearly doubled. The two motors in series are of… … motor No. 2 Fig. 106. Fig. 107. out in steps as the speed increases. When the speed has reached,say, 10 miles per hour and the resistance is all cut out, the con-nections are quickly changed * to those shown in Fig. 107. Thatis, the motors are quickly connected in parallel, and starting *This…
Dynamos · Electric motors
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