Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 128
) apply when the ELECTROMAGNETIC INDUCTION 117 primary and the secondary are stationary and the current ischanging in value in the primary. 125. Eddy Currents.—If a disk of copper, or other conduct-ing material, be rotated below a suspended magnet, as shownin Fig. 85, currents will be produced in…
Electrical engineering
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