Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 151
Fig. i6i Fig. 162 was a S. pole, and has been carried round so that one side of itcomes under the pole when it is reversed. Fio. 162 shows same effect on a drum revolving between thepoles of an alternating magnet. The current in the copper drumhas just developed, but the drum has moved round, so…
Electrical engineering · Electric power
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