Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 224
Fig. 218.—Electrodynamometer type of instrument. These forces are proportional to the current i in the coil Cand to the flux 0 produced by the current i in the coils A; theforces are therefore proportional to i2 and the average turningforce on the coil C while the current alternates is proportional…
Electrical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
