engineering recuitment UPMRC JE 2024 Mock Test Electrical Machines Transformer Efficiency of a Transformer
A 2400/240 V, 200 kVA, single phase transformer has a core loss of 1.8 kW at rated voltage. Its equivalent resistance is 1.1%. Then the transformer efficiency at 0.9 power factor and on full load is
1
95.60%
2
96.71%
3
97.82%
4
98.93%