Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 168
Fig. 116 ELECTKICAL INSTRUMENTS 157 in section (163), is called an indicating wattmeter, sinceit gives the instantaneous value of the watts expended in acircuit, just as a voltmeter and ammeter indicate the fluctua-tion in voltage and current. The watt-hour consumption inany circuit could be…
Electrical engineering
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