Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 53
Fig. 35.—Flow of current ina grid resistance. Fig. 36.—Carbon pile rheostat. are separated from one another by washers which are either ofmetal as at D and E or of insulating materials as at F, depending Art. 37] RHEOSTATS AND RESISTANCE 29 on the direction in which it is desired to make the…
Electrical engineering
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