Electricity experimentally and practically applied; a book for the beginner and for the practical man, principles, experiments, practical applications and problems (1910)
Ashe, Sydney Whitmore · New York, D. Van Nostrand company · leaf 177
epulsion of the bolt will takeplace, but when the bolt is allowed to touch bothpoles, it will remain in contact. This is a simplemethod of testing the polarity of the field coils. Magnetic Circuits of Armature. — The armature of a motor is wound with loopsof wire connected to the various…
Electricity · Electrical engineering
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