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diff --git a/752/CH8/EX8.11.1/8_11_1.sce b/752/CH8/EX8.11.1/8_11_1.sce
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+clc;
+//page no 274
+//prob no. 8.11.1
+//RC load ckt for diode detector with c=1000pF in paralel with R=10Kohm
+fm=10*10^3;//modulation freq
+c=1000*10^-12;R=10*10^3;
+Yp=(1/R)+((%i)*2*(%pi)*fm*c);//admittance of RC load
+disp(Yp);
+Zp=1/sqrt((real(Yp)^2)+(imag(Yp)^2));
+disp(Zp);
+//Determination of max modulation index
+m=Zp/R;
+disp(m,'The max modulation index is');
+\ No newline at end of file