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 418
witzerland. In these the speedis low and it is desirable to have this speed maintained, whether thecar is on a level track, is ascending a grade, or is descending a grade.In the latter case if the line voltage is not interrupted, the motorsact as generators and restore power to the line, at the… … 373
Electrical engineering
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