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 110
Fig; 101. Square Order Fig. 102. Hexagonal Order of Bedding of Bedding the thickness of the insulation. The ratio of net cross-sectionalarea of copper in any such space to the gross section, is called thespace-factor. In winding bobbins for field-magnet coils, the space-factordepends largely upon…
Electrical engineering
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