The parameters of a 23 kVA 2300V / 230V 50Hz step-down transformer are R1 = 4 ohms, x1 = 12 ohms, R2 = 0.04ohm, x2 = 0.12ohm, Rc = 3000 ohm, Xm = 2500. The load ratio of the transformer is x = 0.8 and the load voltage is 210 v while the angle of the load is restored to 0.9. According to this
a) What are the primary and secondary currents (I1 = ?, I2 =?)
b) Voltages induced in the windings (E1 = ?, E2 =?)
c) Primary and secondary effective powers (P1 = ?, P2 =?)
d) Find the yield.
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