initial commit / add all books

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diff --git a/3775/CH3/EX3.11/Ex3_11.sce b/3775/CH3/EX3.11/Ex3_11.sce
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+//Ex 3.11 page 125
+
+clc;
+clear;
+close;
+
+Vs=230;// V
+Io=5;// A
+alpha = 45;// degree
+printf('part(i)')
+Vo=2*sqrt(2)*Vs/%pi*cos(alpha*%pi/180);// V
+printf('\n dc output voltage = %.1f V',Vo)
+Pi=Vo*Io;// W
+printf('\n Active power = %.1f W',Pi)
+Qi=2*sqrt(2)*Vs/%pi*sin(alpha*%pi/180)*Io;// VAR
+printf('\n Reactive power = %.1f VAR',Qi)
+printf('\n\n part(ii)')
+R=Vo/Io;// ohm
+Vo=sqrt(2)*Vs/%pi*(1+cos(alpha*%pi/180));// V
+printf('\n dc output voltage = %.1f V',Vo)
+Io=Vo/R;// A
+Pi=Vo*Io;// W
+printf('\n Active power = %.1f W',Pi)
+Qi=sqrt(2)*Vs/%pi*sin(alpha*%pi/180)*Io;// VAR
+printf('\n Reactive power = %.0f VAR',Qi)
+printf('\n\n part(iii)')
+Vo=sqrt(2)*Vs/%pi/2*(1+cos(alpha*%pi/180));// 
+printf('\n Average load voltage = %.0f V',Vo)
+Io=Vo/R;// A
+printf('\n Average load current = %.2f A',Io)