Electricity and magnetism : an elementary text-book, theoretical and practical (1920)
Glazebrook, Richard, Sir, 1854-1935 · Cambridge : The University press · leaf 403
Fig. 245 a. Fig. 245 6. the external circuit or, for an alternate current machine, totwo slip rings, 245 b. The rotating coil is known as thearmature of the machine. As the coil rotates the e.m.p. changes 239-24)1] ELECTROMAGNETIC INDUCTION 393 from zero when the plane of the coil is perpendicular… … Fig. 246. medical practice act on the same principle. Two coils of wirewith parallel iron cores are connected in series and arrangedso that they can rotate about a common axis parallel to thecores. The rotation takes place in front of a horseshoe magnetso that the ends of the cores come alternately…
Electricity · Magnetism
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