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- · New York, T. Audel · leaf 274
or the 8 pole ma-chine, the phasedifference between ad-jacent coils is 20 de-grees. For the 10 polemachine, the phasedifference is also 20degrees. The cosine of 20 de-grees is .9397, conse-quently, if 3 adjacentcoils be united in series,their joint pressure willbe 2.897 multiplied bythat of the… … a multiple of f 10 poles. cases are 21-.:572 •ing ti :night be f v - «L
Electrical engineering
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