A single phase transformer rated 150kVA Vp=7.2kV Vs=240V
•Transformer secondary winding leakage reactance Xs= 0.07 ohm
•The resistance Rs = 0.025 ohm on secondary side
•Transformer magnetizing reactance xm = 850 ohm, core resistance Rc = 2450 ohm on primary side
•Primary windings leakage Xp = 0.25 ohm, Rp= 0.15 ohm
•Transformer load = 120 KVA pf = 0.81 lagging
Determine:
A)Load current and transformer secondary voltage when load V=235V
B)Transformer primary voltage and current
C)Magnetizing current
D)Transformer supply voltage and current.