International Library of Technology · Scranton, International Textbook Co. · leaf 345
und that the mov-able arm on the rheostatunder the car gave con-siderable trouble, so thenext step was to place the re-sistance itself undef the carand run wires from it andthe motors to a controllerplaced on the platform. Thecontroller is a device forcutting out the resistanceor for effecting any… … § 24 ELECTRIC RAILWAYS. 17 by a simple controller and also how the cutting out of resist-ance is effected. jR is a resistance divided into two parts;one part lies between 1R and 2 R and the other part between2R and 3R\ i^and A are the field and armature, respect-ively, of a dynamo that is to…
Electrical engineering
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