Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 351
d entering therails, but the pipe lying underground, in proximity to the track,offers the current less resistance than the rails and is enteredby the current at b; it then leaves the pipe at c, to flowthrough a part of the rails back to the dynamo. The car mov-ing, the current changes the place of… … tic. 158. Experiments have been made to protect the pipes by paint-ing them with asphalt and other substances, but it has beenfound that the corrosion even occurs under the coating of paint. Especially frequent is the corrosion of pipes in joints. Fig.159, represents the joint of two gas pipes A…
Electrical engineering
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