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 154
from a magnetpole will yield currents alternating in direction. 134 HAWKINS ELECTRICITY Since the strength of the field depends on the proximity to the pole,the approach and recession of a conductor involve an increase anddecrease in the rate of cutting of magnetic lines, hence a reversal of… … y -*«f *! 5 J 2 O UJ 1-cc o V) 2 u.o t? _j > f \ r i M f V J^IG. 133.—A rule for diiection of induced current which, in some cases, is more convenientlyapplied than Flemings rule: Hold the thumb, forefinger and remaining fingers of theright hand at right angles to each other; place the hand in…
Electrical engineering
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