Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 50
fig. 284. In this method, one terminal of the volt meter is connected to oneof the brushes of the dynamo, and the other terminal is joined by a wireto a small pilot brush which can be pressed against the commutatorat any desired part of its circumference. With the machine runningat its rated speed,… … Fig. 285.—Cross magnetization. This is denned as lines of magnetic force set up in the windingsof a dynamo armature which oppose at right angles the lines of force created between thepoles of the field magnet. The figure shows this cross flux which is due to the armaturecurrent alone. Ques. How…
Electrical engineering
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