Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 225
Tig. 219. Fig. 220. such as a are cut by lines of force and the e.m.f. in these con-ductors varies as shown in Fig. 220 and goes through one cyclefor every pair of poles that pass. … A B Fig. 221.—Representation of an alternating voltage. 234. Electrical Degrees.—If the vector op rotate in the coun-ter-clock direction and the angle 9 is measured from the a;-axisthen om, the projection of op on the y-axis = op sin 0 and its value,plotted in diagram B, passes through one cycle…
Electrical engineering
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