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+//Example No. 5.26
+clc;
+clear;
+close;
+format('v',9);
+
+//Given Data : 
+V1=675;//V
+alfa1=90.5;//degree
+N1=350;//rpm
+Ia1=30;//A
+N2=500;//rpm
+Rf=0.22;//ohm
+Ra=0.22;//ohm
+Ia2=Ia1*N2/N1;//A
+disp(Ia2,"Armature current of converter in A : ");
+Va1=V1*sqrt(2)/%pi*(1+cosd(alfa1));//V
+Eb1=Va1-Ia1*(Ra+Rf);//V
+//Eb1/Eb2=Ia1*N1/(Ia2*N2)
+//Eb2=Va2-Ia2*(Ra+Rf)
+Va2=Eb1*Ia2*N2/(Ia1*N1)+Ia2*(Ra+Rf);//V
+alfa2=acosd(Va2/V1/sqrt(2)*%pi-1);//degree
+disp(alfa2,"Fringe angle of converter in degree : ");