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 150
Fig. 34. Main Pole and Interpole Complete to vibrate and injure their insulation. A field coil is shown in Fig.33 and a coil mounted on a pole piece with the flat steel spring inplace is shown in Fig. 34. … Fig. 35. Armature Core Armature Core and Coils. The armature core is built up ofthin steel sheets, insulated from each other by coats of japan andclamped firmly between iron end plates. To improve ventilationseveral spaces are provided by separating the sheets by means of 137 32 ELECTRIC RAILWAYS…
Electrical engineering
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