Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 255
ssively switched in or out of the maincircuit by means of a lever and button-switch. The best placeto install a rheostat is on a wall or post, as the resistance trans-forms a portion of the electric energy into heat, which heatmust be dispersed into the atmosphere. A transformer is an induction…
Hydraulic machinery · Pumping machinery
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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