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+//CHAPTER 3- THREE-PHASE A.C. CIRCUITS
+//Example 2
+
+disp("CHAPTER 3");
+disp("EXAMPLE 2");
+
+//VARIABLE INITIALIZATION
+v_l=400;                          //line voltage in Volts
+I_l=30;                           //line current in Amperes
+p=12*1000;                        //power absorbed in Watts
+
+//SOLUTION
+v_ph=v_l/sqrt(3);                 //phase voltage = (line voltage)/sqrt(3)
+z_ph=v_ph/I_l;                    //phase current = line current for star connection   
+pow_fact=p/(sqrt(3)*v_l*I_l);     //three-phase power = sqrt(3)*v_l*I_l*pow_fact
+r_ph=z_ph*pow_fact;               //from impedance tringle
+disp(sprintf("The resisatnce of each impedance is %.2f Ω",r_ph));
+x_ph=sqrt((z_ph^2)-(r_ph^2));
+disp(sprintf("The ractance of each impedance is %.2f Ω",x_ph));
+
+//END
+
+
+