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 160
otor be taking (thevoltage for which the speed curve was derived is 500) ? (e) Whatis the efficiency of the motors? Solution, (a) and (b). In Fig. 46 is represented the car onthe grade. To pull it up the grade will require a force made up oftwo components, (1) that required to overcome friction;… … Fig. 46. Diagram of Car on Grade independent of the speed, the friction being assumed constant.This force is produced by two motors, hence each must produceone-half. To use the curves requires the transfer of this force toterms of torque. Each motor must deliver at the wheel tread atractive effort…
Electrical engineering
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