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 68
Fig. 53. Complete Ring ShowingBrushes -a; Fig. 54. Magnetic Field of a GrammeRing Armature the armature not only produces a cross-magnetizing effect, but alsoa greater demagnetizing tendency. It is this latter effect whichdiminishes the generated e. m. f. In order to study the result, suppose a…
Electrical engineering
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