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 339
driving shaft; that is, with each 360 degrees of angular motionof the shaft. We may, therefore, for the sake of convenience,divide the horizontal axis or zero line in our charts into 360parts for each cycle of the flow, and call the parts degrees insteadof fractions of time. This is illustrated in… … Fig. 211. — Two alternating currents with 30 degrees difference of phase. the horizontal axis at points which are 30 divisions or degreesapart. 209. Curve of electric current made by a bipolar generator.We have already soon (section 140) that each armature coilof a d-c. generator tends to generate…
Electricity · Magnetism
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