A4 KVA, 200/400 V,50 Hz, single phase transformer has equivalent resistance reffered to primary as 0.15 (0.Calculate, i) The total copper losses on full load. ii) The efficiency while supplying full...

Extracted text: A4 KVA, 200/400 V,50 Hz, single phase transformer has equivalent resistance reffered to primary as 0.15 (0.Calculate, i) The total copper losses on full load. ii) The efficiency while supplying full load at 0.9 p.f lagging. iii) The efficiency while supplying half load 0.8 p.f. leading. Assuming total iron losses equal to 60W.