Comparative tests of induction wattmeters . 20o F. as it does at 60° F. but will runslower at 80° F. and 100° F. The reason for the good results of the power factor testsis shown in the quadrature tests. - The accuracv with which themagnetic fluxes have been brought approximately into quadratureis suprising. The different meters were tested for starting was foiond to be very small, being less than .05 amperein all cases. No definite results werw obtained owing to thedifferent values obtained for different positions of the rot-ating element. CALIB RATION ME/KSURINQ INSTRUMENTS. Cal
Comparative tests of induction wattmeters . 20o F. as it does at 60° F. but will runslower at 80° F. and 100° F. The reason for the good results of the power factor testsis shown in the quadrature tests. - The accuracv with which themagnetic fluxes have been brought approximately into quadratureis suprising. The different meters were tested for starting was foiond to be very small, being less than .05 amperein all cases. No definite results werw obtained owing to thedifferent values obtained for different positions of the rot-ating element. CALIB RATION ME/KSURINQ INSTRUMENTS. Calibration of Weston Voltmeter #753. April 2, 1907. TrueVolts 80 ^0 100 1(15 110 115 119 Voltmeterreading 98,6 April 22, 1907. April 15,1907. Truevolts 80 90 100105110 115120 Voltmeterreadiiig April 29, 1907. Truevolts Voltmeterreading Truevolts Voltmeter reading gg 80 100 90 110 100 118 110 115 118 _- ?——??—?—??? ????? ????? —gl, ii^HiKiBiBSaaiBH ?????????? ??????BOBi »???????????! RMk ????? ———? ???????????????????? ???????????????? Mi»«»——?????? ???????— ??????—?? ???????—???—??SSMMaBaamHaHBaB ???????????????????? «????????????gBBBBS-*g ggggggggtB SgHBBSBBB BKBEBBBBBSSBBBSBSS5 SSS!??????????????? iiua ?????????? ?? PM—^??« ???????«??????«? ???? !???????? !????????«???????
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Keywords: ., bookcentury1900, bookdecade1900, bookidcomparativet, bookyear1907
