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 153
Fig. 175. — Calibrating Rotary Ammeter. place another ammeter in series with the one being tested,as in Figs. 175, 176, and to check the two instruments FEEDER LOAD … Fig. 176. — Calibrating Feeder Ammeter. against each other. In the laboratory a suitable adjustableresistance must be placed in series with the meters. Inpractice this is not necessary, as by properly making the bus 132 EXPERIMEIVTAL ELECTRICITY connections and inserting a jumper in which is the…
Electricity · Electrical engineering
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