. A 25 kVA, single phase 2200/220 V transformer has a primary winding resistance of 1 ohms, secondary winding resistance of 0.01 ohms, primary leakage reactance of 1.5 ohms and secondary leakage...

. A 25 kVA, single phase 2200/220 V transformer has a primary winding resistance of 1 ohms,
secondary winding resistance of 0.01 ohms, primary leakage reactance of 1.5 ohms and
secondary leakage reactance 0.015 ohms. The iron loss of the transformer is 206 watt.
Calculate the efficiency of the transformer and the voltage regulations at the following
condition. A. half load B. Full load c. 50% overload
[Ans: 97.88%, 0.516%; 98.17%,1.033%; 97.94%,1.549%]