Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1302
Fig. 589 SET OF COILS MADE UP READY TO BE PLACED IN TRANSFOBMEE Transformers 1267 now equivalent to 4 K. W. on a 100 K. W.) its efSciencyis 48-^50=0.96. … Fig. 590air blast transformer At qu.arter load it takes in 25 K. W., loses 2 K. W., soits efficiency is 23-^-25=I:0.92. By clever designing transformers are built to be mostefficient at three-quarters load. They are a little less effii- 1268 Steam Engineering cient at half, and full loads, and…
