Q3. The test data for a single phase 4X (kVA), 3500/250 V, 50 Hz transformer is given below: Determine: a) the equivalent circuit parameters of the transformer, referred to the

HV side, b) the equivalent circuit parameters of the transformer, referred to the LV side, c) the voltage regulation for 80% of the rated load, operating at 0.85 power factor lagging, d) draw the phasor diagram of the transformer for loading condition in (c), e) efficiency for loading condition in (c), and f) if the transformer is to be connected as an auto transformer of 3500/3750, determine the power advantage?