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Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)

Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1074

An illustration from Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .., 1916, leaf 1074 — ying the speedin revolutions per second by the number of pairs of poles.The number of cycles is usually spoken of as the frequencyof the alternator. The Dynamo 1039 The usual frequencies are for power 25, for motor cir-cuits, and arc lamps 66, and for incandescent lighting 133. The Direct Current… … LAMPS Fig. 432 simple d. c. generator. the armature has made half arevolution, but brush m is still positive is called the positive brush. In wire CD the current flowsfrom C to D, making P the negative brush. After half a revolution the wire CD is over where ABwas, and is now delivering the current…

Steam engineering · Electrical engineering · Steam-turbines

Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.

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