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 44
shown in Fig. 33, with a central zero, is especially conven-ient for laboratory work, as it may be used without theshunt as a galvanometer. The ammeter is in reality a lowrange voltmeter or milli-voltmeter measuring the drop inpotential across the shunt. A small mirror is mountedunder the pointer… … Fig. 33. ■Weston Ammeter, Central Zerowith Shunt. MAGNETISM 23 The scale may be so arranged as to indicate two sets ofvalues, such as 150 volts and 300 volts. For details as tothe calibration of voltmeter and ammeters, see chapter onmeasurements. QUESTIONS 1. Give a complete explanation of the…
Electricity · Electrical engineering
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