International Library of Technology · Scranton, International Textbook Co. · leaf 458
Fig. 30. 35 ELECTRIC RAILWAYS. 25 … Fig. 31. 39. Westinglioixse Resistance Coil.—In Fig. 31 is shown the type of re&istance coil made by the Westinghouse Com-pany. This coil is made of band iron insulated entirely with mica, and up to certain limits of abuse it is not affected by either heat or water. A single coil, such as that…
Electrical engineering
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