1) A 100KVA, 60Hz, transformer has a turns ratio of 4 (K= N2/N1), primary winding has a resistance of 4ohm and inductive reactance of 3ohm and secondary winding has a resistance of 40 ohm and reactance of 60ohm, find the equivalent value of the impedance referring to primary side.
2) A 600/120V, 60Hz transformer has a primary resistance of 0.4 Ohm, reactance of 0.9 ohm and secondary has a resistance of 0.8 Ohm and reactance of 1.2 Ohm. Find the secondary terminal voltage when it is connected to a load of 1500W at 0.8 lagging power factor.