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diff --git a/3802/CH9/EX9.6/Ex9_6.sce b/3802/CH9/EX9.6/Ex9_6.sce
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+//Book Name:Fundamentals of Electrical Engineering
+//Author:Rajendra Prasad
+//Publisher: PHI Learning Private Limited
+//Edition:Third ,2014
+
+//Ex9_6.sce.
+
+clc;
+clear;
+P=500e3;
+Vl=3.3e3
+Il=P/(sqrt(3)*Vl);
+Vph=Vl/sqrt(3);
+Iph=Il;
+Rph=0.4;
+Xsyn=4.2;
+
+printf("\n   (a)")
+pf=1;            //unity
+Ef=((Vph+(Iph*Rph))^2+(Iph*Xsyn)^2)^(1/2);
+reg=((Ef/Vph)-1)*100;
+printf("\n  Voltage Regulation for unity power factor=%1.2f percentage \n",reg)
+
+printf("\n   (b)")
+pf=0.8;             //lagging
+theta=acosd(pf);
+Ef=((Vph+(Iph*Rph*cosd(theta))+(Iph*Xsyn*sind(theta)))^2+((Iph*Xsyn*cosd(theta))-(Iph*Rph*sind(theta)))^2)^(1/2);
+reg=((Ef/Vph)-1)*100;
+printf("\n  Voltage Regulation for 0.8 lagging power factor=%2.3f percentage \n",reg)
+
+printf("\n   (c)")
+pf=0.8;              //leading
+theta=acosd(pf);
+Ef=((Vph+(Iph*Rph*cosd(theta))-(Iph*Xsyn*sind(theta)))^2+((Iph*Xsyn*cosd(theta))+(Iph*Rph*sind(theta)))^2)^(1/2);
+reg=((Ef/Vph)-1)*100;
+printf("\n  Voltage Regulation for 0.8 leading power factor=%1.1f percentage \n",reg)