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Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)

Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 465

An illustration from Twentieth century hand-book for steam engineers and electricians, with questions and answers .., 1905, leaf 465
through thelamps, returning to the - brush on the dynamo. Inour elementary sketch of a dynamo we used batterycurrent to magnetize our fields; we need not consider 46 ELECTRICITY FOR ENGINEERS that any more, for in practice all direct currentdynamos produce their own magnetism by circulatingsome or… … ^mtrf) FIGURE 20. portion of th(^ main generated current of electricitypasses around the field magnets. The quantity of cur-rent passing around these field magnets is also regu-lated by a resistance sometimes called a rheostat shownat R. The resistance to the flow of current throughthis box is…

Steam engineering · Electrical engineering · Steam turbines

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