A 9.2KVA, 1.2KV/115V step down transformer has the following parameters: Rp=0.05ohm, Xp=0.107ohm, Rs=0.0150hm and Xs=0.024 ohm. Rc=500.6 ohm and Xm-220 ohm. Draw the approximate equivalent circuit referred to the HV side and determine the following at half load and at 0.9 power factor lagging: a) The efficiency. b) The voltage regulation. P out P 10 P our P+P out losses Pan P+P+Pa