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+//Book Name:Fundamentals of Electrical Engineering
+//Author:Rajendra Prasad
+//Publisher: PHI Learning Private Limited
+//Edition:Third ,2014
+
+//EX10_10.sce.
+clc;
+clear;
+sf=0.04;
+If=37.5;
+f=50;
+p=4;
+V=400;
+P_in_HP=25;
+z=2.8;
+P_in_watt=P_in_HP*735.5;
+Nf=((120*f)/p)*(1-sf);
+nf=Nf/60;
+Tf=P_in_watt/(2*%pi*nf);
+Isc_phase=V/z;
+Isc=sqrt(3)*Isc_phase;
+
+printf("\n (i) Using Direct switching")
+Ist=Isc;
+printf("\n \t The starting current=%3.2f A",Ist)
+Tst=(Isc/If)^2*sf*Tf;
+printf("\n \t The starting torque=%3.1f Nm \n",Tst)
+
+printf("\n (ii) Using Star delta connector")
+Ist=(1/3)*Isc;
+printf("\n \t The starting current=%3.2f A",Ist)
+Tst=(1/3)*(Isc/If)^2*sf*Tf;
+printf("\n \t The starting torque=%3.1f Nm \n",Tst)
+
+printf("\n (iii) Using auto transformer")
+k=0.7;
+Ist=k^2*Isc;
+printf("\n \t The starting current=%3.2f A",Ist)
+Tst=k^2*(Isc/If)^2*sf*Tf;
+printf("\n \t The starting torque=%3.1f Nm \n",Tst)