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+// Exa 9.12

+clc;

+clear;

+close;

+format('v',6)

+// Given data

+Rating = 30*10^3;// in VA

+V1 = 2000;// in V

+V2 = 200;// in V

+f = 50;// in Hz

+R1 = 3.5;// in ohm

+X1 = 4.5;// in ohm

+R2 = 0.015;// in  ohm

+X2 = 0.02;// in ohm

+K = V2/V1;

+R1e = R1 + (R2/(K^2));// in ohm

+disp(R1e,"The equivalent resistance to primary side in ohm is");

+X1e = X1 + (X2/(K^2));// in ohm

+disp(X1e,"The equivalent reactance to primary side in ohm is");

+Z1e = sqrt( (R1e^2) + (X1e^2) );// in ohm

+disp(Z1e,"The equivalent impedance to primary side in ohm is");

+I1 = Rating/V1;// in A

+// Total copper loss in transformer

+Pcu_total = (I1^2)*R1e;// in W

+disp(Pcu_total,"Total copper loss in W is");