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+//Exa 5.1
+clc;
+clear;
+close;
+//Given Data :
+format('v',6);
+Load=100;//in MW
+V=380;//in KV
+d=100;//in km
+rho=0.045;//in ohm/cm^2/km
+w=0.01;//in kg/cm^3
+Eff=90;//in %
+IL=Load*10^6/(sqrt(3)*V*10^3);//in Ampere
+P_loss=Load*(100-Eff)/100;//in MW
+P_loss=P_loss*10^6;//in Watt
+P_loss=P_loss/3;//in watt/conductor
+R_con=P_loss/IL^2;//in ohm/conductor
+//R_con=R_con/d;//in ohm/conductor/km
+a=rho*d/R_con;//in cm^2
+vol=a*d;//in cm^3
+W_cu=vol*w;//in Kg
+disp(W_cu*100*10^3*3,"Weight of Cu for 3 onductors of 100 km length(in Kg) :");
+//Note : answer in the book is not accurate.
+\ No newline at end of file