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 403
uctor and offersresistance to the passage of current, it will naturally heat and finallycause the metal to soften sufficiently to weld. In practice the opera- 361 68 WELDING tion is very rapid because comparatively large amounts of currentare used and heavy pressures are applied. < ■Mi ^ Fig.…
Electrical engineering
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