International Library of Technology · Scranton, International Textbook Co. · leaf 286
ected by the changes in the magnetic flux. Thismeans that the conductors must be bunched together intoheavy coils like those shown in Fig. 1512 if the maximumeffect is to be obtained. If the winding were spread outover the surface of the drum, as is done in direct-currentarmatures, the E. M. F. in… … Fig. 1517. coil is here spread out to a certain extent, and theE. M. F.s in the different turns would be slightly out ofphase with each other, because they would not all come into 2660 THEORY OF ALTERNATING and go out of action at the same instant. The total E. M. F,generated by such a coil would…
Electrical engineering
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