International Library of Technology · Scranton, International Textbook Co. · leaf 408
space forinsulation on a stationary armature is usually greater thanon a revolving one, and, moreover, the insulation is morelikely to remain intact. A revolving armature also necessi-tates collector rings, brush-holder studs, etc., which have tobe insulated for high pressures; whereas with the… … Fig. 1613. ■4112. When the coils each contain a large number ofturns, the voltage generated per coil will be large; conse-quently it is not only necessary to insulate the outside of thecoil thoroughly, but each layer must alsobe insulated from its neighbor. Fig. 1613shows a section of a coil…
Electrical engineering
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