Electricians' operating and testing manual; a hand book for men in charge of electrical apparatus, repair men, trouble men, lamp trimmers, and electricians generally (1916)
Horstmann, Henry Charles, Tousley, Victor Hugo, 1875- joint author · Chicago, F.J. Drake & co · leaf 147
one of the machines is moving faster there Operation of Alternators 143 will be a steady change in all of the lights. To get aclearer view of this let the machine at the right bemoving twice as fast as the one at the left. TheE.M.F.s of the two machines will then at any time berepresented by the… … Figure 95 phases to which it is connected. If both E.M.F.s areabove the horizontal line they must be subtracted, thelesser from the greater, if one is above and the otherbelow the values must be added, since they representopposite polarities. Following this out we obtain thetable below in which the…
Electrical engineering · Electric testing
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