Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 102
oetthe orreatest number of am-pere-turns possible round themagnet. If the maofnetisino- forceis weak the magnetism re-maining after the force isremoved is found to be onlyskin deep. Thick masfnets are diffi-cult to forge, to temper, andto magnetise uniformly, hencethey are never so strong asflat… … Fig. 104 Electro-Magnets inch broad, built up to form a magnet one inch square, and each separately magnetised, are together much stronger than one made of a bar one inch square solid. Good steel magnets have a lifting or tractive force of about twenty times their weight when made horse-shoe shape…
Electrical engineering · Electric power
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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