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+//Tested on Windows 7 Ultimate 32-bit
+//Chapter 3 Semiconductor Diodes and Miscellaneous Devices Pg no. 89
+clear;
+clc;
+
+//Given Data
+
+Rl=470;//Load resistance in ohms
+r=2;//Diodes dynamic resistance in ohms
+esp=50;//Input signal voltage magnitude in volts peak
+esf=314/(2*%pi);//Input signal frequncy in hertz
+
+//Solution
+
+disp("(a)");
+Ep=esp*sqrt(2);//peak voltage in volts
+Ip=Ep/(Rl+r)*1000;//peak current in amperes
+
+printf("The peak value of current = Ip=%.1f mA\n",Ip*1000);
+
+disp("(b)");
+Iavg=2*Ip/%pi;//average or d.c. value of current in in milli-amperes
+
+printf("The average or d.c. value of current = Iav=%.2f mA\n",Iavg);
+
+disp("(c)");
+Irms=Ip/sqrt(2);//rms current in milli-amperes
+
+printf("The rms value of current = Irms=%.2f mA\n",Irms);
+
+disp("(d)");
+RF=sqrt((Irms/Iavg)^2-1);//ripple factor
+
+printf("The ripple factor = RF=%.4f\n",RF);
+
+disp("(e)");
+Pdc=(Iavg/1000)^2*Rl//d.c. output power in watts
+Pac=(Irms/1000)^2*(Rl+r);//input ac power in watts
+n=Pdc/Pac;//Rectification efficiency is output dc power over input ac power
+
+printf("Rectification efficiency= %.2f percentage",n*100);
+
+//Efficiency calculation error in textbook and also decimal errors due to approximations