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 482
FIGURE 35. of the armature. In Fig. 36 we assume a heavy loadon the dynamo and consequently the magnetism of thearmature opposes that of the fields. This changes thelocation of the neutral point (when the coils under thebrush generate no current) and it becomes necessary to … FIGURE 36. shift the brushes accordingly, or great sparking wouldresult. The amount of shifting necessary with changesof load varies in different dynamos. If the field is 64 ELECTRICITY FOR ENGINEERS very strong compared to the armature, it will be butlittle. If the armature (as in some arc…
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