Electric transmission of energy and its transformation, subdivision, and distribution. A practical handbook (1894)
Kapp, Gisbert, 1852-1922 · New York, Van Nostrand · leaf 357
— FIELD CURRENT AND IMPRESSED FIELD. 339 course, equally to a drum-wound field. The average exciting power producing the field is the mean between these two values, or 1*865/£, and if for the maximum value of the current we insert the effective value i, we have the exciting power in ampere-turns…
Electric power production
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