International Library of Technology · Scranton, International Textbook Co. · leaf 438
t;<<- theoretical neutral line a b.Fig. 1163. The magnetizing force of this coil acts along the line a b, that being the axis of thecoil. It will be seen that this introduces no magnetomotiveforce that is opposed to the lines of force passing through thearmature, since on each side of a line… … 3117. As soon, however, as the brushes are shiftedahead to effect sparkless commutation, this condition doesnot hold; the shifting of the brushes introduces into that APPLIED ELECTRICITY. 1971 part of the armature that lies on each side of the centerline of the pole faces an excess of conductors…
Electrical engineering
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