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 189
Field Experiment loi. Take a 500-ohm rheostat, andplace it in series with a i6-candle-povver lamp and -t^^-^S^a 120-volt direct current circuit. Vary the rheostatand note its position when resistance is *all in, and when it is allout. When in doubt, look at the back of the rheostat. COMMUTATOR … Fig. 233- Cross Section of Cutler Hammer Rheostat. Experiment 102. Use a field rheostat which isopen circuited, burnt out. as in Fig. 234, and makea set-up similar to that in the previous experiment.Use a short piece of wire termed a jumper andFig. 234. — Burnt-out make a contact between the…
Electricity · Electrical engineering
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