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 1301
Fig. 588interior construction of an air blast transii^rmee … 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.
