Electric transmission of energy and its transformation, subdivision, and distribution. A practical handbook (1894)
Kapp, Gisbert, 1852-1922 · New York, Van Nostrand · leaf 310
explained by Tesla by means of diagrams some of whichare reproduced in Fig. 101. N S are the field-magnetsof the generator which is provided with an armaturehaving two coils as shown. The field system of themotor consists of a ring of laminated iron surrounded byfour coils which are connected in…
Electric power production
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