Comparative tests of induction wattmeters . < 0 ?!^^B$ISU«^!BS8^:>$j8HJ . :i <i ^ H ^:: ti^ it^ : • ^ id Schaeffer Induction T/attmeter Type E. Data showing the effect of change of frequency at125?^ load. Potential = - voltsTemperature = - ° factor = .99 Frequency Registered 40 60 80 Schaeffer Induction lYattmeter Type E. Data showimg the effect of change of frequency at100^ load. Potential = - voltsTemperature = - ^F,Power factor = .99 Frequency 1^Registered 40 60 115

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Comparative tests of induction wattmeters . < 0 ?!^^B$ISU«^!BS8^:>$j8HJ . :i <i ^ H ^:: ti^ it^ : • ^ id Schaeffer Induction T/attmeter Type E. Data showing the effect of change of frequency at125?^ load. Potential = - voltsTemperature = - ° factor = .99 Frequency Registered 40 60 80 Schaeffer Induction lYattmeter Type E. Data showimg the effect of change of frequency at100^ load. Potential = - voltsTemperature = - ^F,Power factor = .99 Frequency 1^Registered 40 60 80 .>,f ,;? f^ r}

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Keywords: ., bookcentury1900, bookdecade1900, bookidcomparativet, bookyear1907