Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 498
to the outer ring on which thebrushes A and A1 bear, only 3, 31 are in circuit, 1, I1 ELECTRICITY FOR ENGINEERS 79 being entirely cut out; while on the inside ring allcoils 2, 21 and 4, 41 are in circuit, the two pairs beingparallel; 4, 41 are coming into the field of best action;in other words,… … figure 42. motive force being generated, and the current is rising;while in 2, 21, the electromotive force is decreasing andthe current falling. Unless 2, 21 were cut out of thecircuit, a point would soon be reached where the elec-tromotive force in 2, 21 would be zero, and conse-quently 4, 41…
