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Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)

Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1076

An illustration from Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery, 1922, leaf 1076
e time at which the coil connectedto the bar under the brush passes from the influence of onepole piece into that of the other. This is the time at whichthe current in the coil reverses in direction, and is calledthe neutral point. If we consider, for the sake- of simplic-ity, an armature having… … FiG. 434 CBOSS SECTION OF SIMPLE COMMUTATOR. BLACK REPRESENTSCOPPER ; WHITE SPACE IS MICA INSULATION ways be set at this point, for this is the point of least spark-ing. In actual practice all commutators have quite a num-ber of bars and it is impossible to avoid, in passing underthe brushes, that…

Steam engineering · Electrical engineering · Steam-turbines

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