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 394
348 ELECTRIC RAILWAYS 251 … 349 252 ELECTRIC RAILWAYS the two sides are held together by the metal which has flowedthrough holes in the rail webs. SPECIAL TRACK CONSTRUCTION Underground Conduit System. The underground conduit sys-tem, in which the conductors conveying the current to the cars arelocated in a conduit under the…
Electrical engineering
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