TABLE 374. 

 ENERGY LOSSES IN TRANSFORMER STEELS. 



325 



Determined by the wattmeter method. 



Loss per cycle per cc = AB*-\-bnB<>, where # = flux density in gausses and = frequency in 



cycles per second, x shows the variation of hysteresis with B between 5000 and 10000 gausses, 



and y the same for eddy currents. 



German. 



t English. 



. 



t In order to make a fair comparison, the eddy current loss has been computed for a thickness 01 0.0357 cm. 

 No. 29), assuming the loss proportional to the thickness. 



Lloyd and Fisher, Bull. Bur. Standards, 5, p. 453 J 99- 



Note. For formula and tables for the calculation of mutual and sell Inductance see Bulletin Bureau 

 of Standards, vol. 8, p. 1-237, 1912. 



SMITHSONIAN TABLES. 



