Electricity experimentally and practically applied; a book for the beginner and for the practical man, principles, experiments, practical applications and problems (1910)
Ashe, Sydney Whitmore · New York, D. Van Nostrand company · leaf 202
gener-ated). Vary the speed by placing a lightload upon the motor, and take a series ofobservations of speed and current input. Arrange a double throwswitch. Fig. 248, so that the projecting galvanometer terminals cometo the middle terminals, and so that two of the switch terminals areconnected to… … 180 EXPERIMENTAL ELECTRICITY Readings of current may then be taken by throwing the switch in onedirection, and readings of speed may be taken by throwing the switch in the opposite direction. A ^-horse-power motor is very satisfactoryfor this experiment (lecture ex-periment). Changing Direction of…
Electricity · Electrical engineering
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