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 231
andthe position 180°therefrom corre-spond with thepoints 90° and270° on the curvein figure 133. A machine with a commutator for delivering direct current continuously in thesame direction is called a direct-current (d-c.) or continuous-current (c-C.) generator. 142. Armatures having more than one… … Fig. 134. — Coil rotated in magnetic field. DIRECT-CURRENT GENERATORS 203
Electricity · Magnetism
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