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+// Exa 2.14

+clc;

+clear;

+close;

+format('v',6)

+// Given data

+Vrms = 50;// in V

+r_f = 20;// in ohm

+R_L = 980;// in ohm

+Vm = sqrt(2)*Vrms;// in V

+Im = (Vm)/(R_L+r_f);

+// The mean load current 

+Idc = (2*Im)/%pi;// in A

+Idc = round(Idc * 10^3);// in mA

+disp(Idc,"The mean load current in mA is");

+// The RMS load current 

+Irms = Im/sqrt(2);// in A

+Irms = Irms*10^3;// in mA

+disp(Irms,"The RMS load current in mA is");

+a = 0.812;// assumed

+// The output efficiency 

+Eta = a/(1+(r_f/R_L));

+Eta = Eta * 100;// in %

+disp(Eta,"The output efficiency in % is");