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 383
or into an a-c. generator.Indeed, we shall see that the alternating-current generator, oralternator, is a simpler machine to build and to understand thanthe direct- or continuous-current generator. 239. Revolving-field alternator. Since it is the relativemotion between conductors and magnetic flux… … Fig. 236. — Cylindrical form of partly wound revolving field used withsteam turbines. It has 4 poles.
Electricity · Magnetism
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