Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 410
Fig. 255. View of Truck without Motors of the armature is transmitted to the driving wheels through theseeccentric springs. The control of this equipment when operating on alternatingcurrent is not by the series-parallel method which is used withdirect-current, but by variation in the applied… … Fig. 256. View of Truck CoinpiL reduced by the transformers to the value required for the motors.The transformers are provided with several taps so that different 365 268 ELECTRIC RAILWAYS voltages can be obtained. This furnishes a very efficient form ofcontrol. The various contacts are made by…
Electrical engineering
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