![](http://www.alamy.com/thumbs/6/72E314BD-3EA3-404B-9DE8-E515E7BF2664/2ANCP8C.jpg)
Comparative tests of induction wattmeters . Fort ??ayne Induction Wattmeter Type K. Data showing the effect of change of load at normalvoltage and frequency, and unity pov7er = voltsTemperature = ° factor = .99Frequency = 60 cycles/sec. Current Watt-hoursmeasured Watt-hoursregistered 1^registered
Size: 1339px × 1867px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookidcomparativet, bookyear1907