International Library of Technology · Scranton, International Textbook Co. · leaf 464
pair of brushes. This type of multipolar drum winding is called a loop^fvinding, since, in following the course of the winding, a 1996 APPLIED ELECTRICITY. series of loops is formed, caused by the opposite sign of thetwo pitches. 3158. Fig. 1174 is a diagram of a four-pole loop wind-ing, in which… … Fig. 1174. arrows, the arrows near the other conductors indicating thedirection of the E. M. F. induced in them. This form of winding needs no further elaboration. Itcan be used for 6, 8, or a greater number of poles, and itsE. M. F. may be calculated in the same manner as for themultipolar ring…
Electrical engineering
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