Q1-A 3-phase step down transformer 1200 KVA , 11000/2200 V, 50 Hz .The resistance /phase and leakage reactance/phase of the primary winding are 1.2Ω and 4.8Ω and the corresponding values for the...

Q1-A 3-phase step down transformer 1200 KVA , 11000/2200 V, 50 Hz .The resistance /phase and leakage reactance/phase of the primary winding are 1.2Ω and 4.8Ω and the corresponding values for the secondary winding are 0.01Ω and 0.06Ω respectively if the primary winding is connected in delta and secondary in star. calculate:
i)The voltage to be applied at normal frequency to the primary to circulate full-load current through it when the secondary is short-circuited
ii) The full load copper loss

Extracted text: Q1-A 3-phase step down transformer 1200 KVA , 11000/2200 V, 50 Hz .The resistance /phase and leakage reactance/phase of the primary winding are 1.22 and 4.82 and the corresponding values for the secondary winding are 0.012 and 0.062 respectively if the primary winding is connected in delta and secondary in star. calculate: i)The voltage to be applied at normal frequency to the primary to circulate full-load current through it when the secondary is short-circuited ii) The full load copper loss