Electric transmission of energy and its transformation, subdivision, and distribution. A practical handbook (1894)
Kapp, Gisbert, 1852-1922 · New York, Van Nostrand · leaf 151
from the four-polemachine will therefore be double that of the two-polemachine. Similarly a six-pole machine will give threetimes, and an eight-pole machine four times the current,the E.M.F. being in all cases the same. The number of brushes to be used is, in these cases,equal to the number of… … diametrically opposite coils, as shown in the left-handside of Fig. 58 for a four-pole machine. We have seen that by increasing the number of fieldpoles the output of the machine is proportionately in-creased, the increase being in the shape of a largercurrent at the original voltage. It is,…
Electric power production
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