Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 74
s the conductors 48 Art. 58] ARMATURE WINDINGS 49 c are moved in the direction of the arrow so as to pass down infront of the N pole and up in front of the S pole and thereby cutthe lines of force that pass from N to S, so that e.m.fs. are gener-ated in these conductors, the direction of which,… … \*F /a^B_ Fig. 61.—Gramme ring winding. they are carried around when the core is driven by a prime mover;the lines of force still pass from N to S and do not rotate with thecore. When this construction is used it is found necessary tolaminate the core for the reason given in art. 62, page 55.…
Electrical engineering
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