An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 392
can berepresented by the regular sine curve. The three sets of coilsare so distributed on the stationary armature that the phasedisplacement between the e.m.f.s is 120 electrical degrees,and figure 244 may also be used to show the curves of theinstantaneous electromotive forces. 244. Frequencies of… … CommonConnection Fig. 246. — Diagram of three-phase Y-connected alternator. ducecl in any single conductor is the time required for it to passa pair of poles {i.e., 360 magnetic degrees) and the number ofcycles per second or frequency is equal to the number of polespassed per second. In the United…
Electricity · Magnetism
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