File:The Street railway journal (1905) (14757847151).jpg

Identifier: streetrailwayj251905newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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d issent into the d. c. end of the large set, which then operates as amotor. When synchronous speed has been attained in thelarge motor-generator set, the stator of the large motor is con-nected with the contact line. It takes about two minutes fromthe time the small motor is started until the large d. c. generatoris ready to furnish current for the two axle-driving motors. In spite of the fact that this system involves the transforma-tion of a. c. into d. c. electric power, its efficiency will comparewell with that of any other system, either d. c. or a. c, espe-cially in a case where the number of stops is relatively fre- what is needed to overcome the resistance of the motor arma-tures and to send the required torque-producing current throughthem. The writer tried the experiment of blocking the wheelsof one of the cars attached to the electric locomotive, in orderto stall the locomotive and allow the maximum draw-bar pullto be developed. Although the current sent into the d. c. mo-
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