An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 340
thecoil at these 12 positions in one revolution or cycle. On the horizontalline we lay off 12 equal spaces of convenient size, which will representequal time intervals. When the coil is in position A, it is cutting no lines of magneticforce and hence no voltage is induced in it; therefore we start… … k N M le, !* f3 h\ Time ! r5\lS0°210° 240° 270 300° 330° 360° 0 B ■MJ 60■ 90u 120° 150° \e, ! ! ! /;\i e\ ! ! < /! \ i ei % 7 I Fig. 212. — Alternating-current curve of bipolar generator. when the coil is at 30° and another line e2 to represent the instantaneouse.m.f. when the coil has moved 60°…
Electricity · Magnetism
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