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 497
LECTRICITY FOR ENGINEERS fundamental principle of which is illustrated in Fig.41. Two pairs of coils, placed at right angles on aniron core, are rotated in a magnetic field. The hori-zontal coils represented in the diagram are producingtheir maximum electromotive force, while the pair ofcoils at… … FIGURE 41. coils. The other coils are open circuited or com-pletely cut out of the circuit. Such a machine will generate current, continuous indirection, but fluctuating considerably in amount.These fluctuations will be diminished by the additionof more coils to the armature. Fig. 42 shows the…