Dynamos and motors; a text book for colleges and technical schools (1911)
Franklin, William S. (William Suddards), 1863-1930, Esty, William, 1868-1928 · New York The Macmillan company · leaf 192
ture and field poles due to the magnetizing action of thearmature alone (field excitation zero). Fig. 121 shows the magneticflux due to the action of the field coils alone (armature current RATINGS AND GUARANTEES. i8i zero), and Fig. 122 shows the composite effect due to field coilsand armature… … Fig. 122. the resultant flux density under these tips is great, as shown inFig. 122. At the pole tips b and c the flux is in oppositedirections in Figs. 120 and 121, and therefore the resultant fluxdensity under these tips is small, as shown in Fig. 122. Figure 123 shows a multipolar machine with…
Dynamos · Electric motors
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