1) A transformer on no load takes 4.5 A at a power factor of 0.25 lagging when connected to a 120V, 60Hz supply, the number of turns of the primary winding is 250. Calculate the magnetizing current, core losses and the maximum value of flux in the core
2) A step down ideal transformer is carrying 4A of no load current at 0.4 power factor lagging when it is connected to a 600V, 60Hz supply. It is delivering full load current of 100A at 0.85 power factor lagging when it is connected to a 120V load. Find the current flowing in primary winding at this load also draw the vector diagram.