Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 274
ent, power factor, see Fig. 284, Eo2 = (2400 + 83)2 + 9602 E0 = 2660 volts, . 2660-2400 Hnn the regulation = 2400—= Per cen*- 276. Automatic Regulators.—To maintain the voltage of analternator constant, the field excitation must be increased as thearmature current increases and as the power factor… … Fig. 288.—Automatic voltage-regulator. Automatic regulators are used with alternators. The essen-tial parts of such a regulator are shown diagrammatically in Fig.288. To keep the voltage Et constant, some means must beprovided to close the contact c so as to short-circuit the resistancer and…
Electrical engineering
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