engineering recuitment RVUNL JEn (RSEB) Mock Tests 2025 Electrical Machines Transformer Efficiency of a Transformer
A 500 kVA transformer has a constant loss of 500 W and copper loss at full load are 2000 W. Then at what load, is the efficiency maximum?
1
250 kVA
2
500 kVA
3
1000 kVA
4
125 kVA
5
225 kVA