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 312
s self-induction. Experiment 163. Measure the efficiency of atransformer, Fig. 377, by placing a wattmeter inthe primary circuit and a wattmeter in the sec-ondary circuit, and by placing a variable loadupon the secondary. A projecting wattmetermay be used for this purpose, arranging a… … Fig. 378. — ManholeTransformer.
Electricity · Electrical engineering
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