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diff --git a/1859/CH7/EX7.5/exa_7_5.sce b/1859/CH7/EX7.5/exa_7_5.sce
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+// Exa 7.5
+clc;
+clear;
+close;
+// Given data
+f=1000;//in Hz
+R1=1000;//in ohm
+R2=1000;// in ohm
+R3=2000;//in ohm
+R4=2000;//in ohm
+C1=1*10^-6;//in F
+r1= 10;// in ohm
+omega=2*%pi*f;
+C2=C1*R1/R2;//in F
+disp(C2*10^6,"Unknown capacitance in micro F ");
+
+r2=(R2*(R3+r1)-R1*R4)/R1;//in ohm 
+del_1=omega*r1*C1;//in radian
+del_1=del_1*180/%pi;// in °
+disp(del_1,"Phase angle error1 in degree");
+del_2=omega*r2*C2;//in radian
+del_2=del_2*180/%pi;// in degree
+disp(del_2, "Phase angle error2 in degree");