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+//Book Name:Fundamentals of Electrical Engineering
+//Author:Rajendra Prasad
+//Publisher: PHI Learning Private Limited
+//Edition:Third ,2014
+
+//Ex9_10.sce.
+
+clc;
+clear;
+Pl=1e6;
+Pd=360;   //developing power
+Pi=600e3;
+Vl=6600;
+pf=0.8;
+Pin=800e3;
+theta=acosd(pf);
+Il=Pl/(Vl*sqrt(3));
+Ps=(Pd*746)/0.9;          // 1HP=746 watt      and efficiency is assumed 90% (i.e 0.9)
+phi_s=acosd(Ps/Pi);
+Is=Pi/(Vl*sqrt(3));
+lag_reactive_crt_load=Il*sind(theta);
+lead_reacitve_crt_motor=lag_reactive_crt_load*sind(phi_s);
+lag_reactive_crt_result=lag_reactive_crt_load-lead_reacitve_crt_motor;
+resultant_active_crt=(Il*pf)+(lag_reactive_crt_load*cosd(phi_s));
+
+resultant_line_crt=sqrt(resultant_active_crt^2+lag_reactive_crt_result^2);
+printf("\n  Resultant line current=%2.2f A \n",resultant_line_crt);
+
+final_power_factor=resultant_active_crt/resultant_line_crt;
+printf("\n  Final power factor=%1.0f \n",final_power_factor);
+
+increase_of_crt=(resultant_line_crt-Il)*100/Il;
+printf("\n  The increase of current=%2.1f percentage \n",increase_of_crt)
+
+increase_power_trans=((Pin+Ps)-Pin)*100/Pin;
+printf("\n  The increase of power transmitted=%2.1f percentage \n",increase_power_trans)