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+//Tested on Windows 7 Ultimate 32-bit

+//Chapter 8 Power Amplifiers Pg no. 288

+clear;

+clc;

+

+//Given Data

+

+vin_p=2;//input signal amplitude in volts

+fin=50;//input signal frequency in hertz

+I1=10;I2=1.5;I3=0.70;I4=0.3;//input current nth harmonic's amplitude in amperes

+

+//Solution

+

+D2=I2/I1;//second harmonic distortion

+D3=I3/I1;//third harmonic distortion

+D4=I4/I1;//fourth harmonic distortion

+disp("(a)");

+printf("Second harmonic distortion D2 = %.f %%\n ",D2*100);

+printf("Third harmonic distortion D3 = %.f %%\n ",D3*100);

+printf("Fourth harmonic distortion D4 = %.f %%\n ",D4*100);

+

+D=sqrt(D2^2+D3^2+D4^2);//distortion factor

+P=D^2;//percentage increase in power

+disp("(b)");

+printf("Percentage increase in power = %.2f %%",P*100);