Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 95
ngine. That is, electric power, watts = amperes X volts.The symbol for watts is W and the formula is writtenW = EI. One kilowatt, KW, equals 1,000 watts, therefore,W KW=. .ooo Whenever an electric current flows through a circuit, itmanifests itself in the form of heat. It was by taking ad-vantage… … Fig. 90.—Apparatus for dotermining heat of an eloetric current. vessel filled Avith water in which a coil of resistance -snre isimmersed, the heat equivalent of an electric current wasdetermined. By passing an electric current through the coilit was found that when energy is expended at the rate…
Electric machinery
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