Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 171
age. 154 ELECTRICAL MACHINERY Why this is so is explained in Fig. 160, where a ring arma-ture is shown between the poles of a two-pole frame. It willbe seen that all the lines of force are only cut by the con-ductors on the outer surface of the core. Therefore, onlythese parts of the coils are… … Fig. 16J.—Shows magnetic leakage in ring armature. across the space in the center of the ring, as indicated inFig. 160. The conductors on the inside of the ring cut thelines of force that leak across from one side of the ring tothe other, in the same direction as the conductors on theoutside of the…
Electric machinery
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