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+clc 
+//variable initialisation
+V=440 //Supply voltage in volts
+P=4 //number of poles
+f=50 //Supply frequency in Hz
+R=0.2 //rotor resistance in ohm
+X=0.35 //leakage reactance in ohm
+N1=1450 //speed in rpm
+N2=1200 //speed in rpm
+S2=0.2
+//solution
+Vph=V/sqrt(3)
+Ns=(120*f)/P//Synchronous Speed
+Wms=2*%pi*Ns/60
+S=(Ns-N1)/Ns
+T=(3/Wms)*(Vph^2)*(R/S)/((R/S)^2+(X)^2)//The answer provided in the textbook is wrong
+K=T/(1-S)
+T2=K*(1-S2)
+Vph2=sqrt(T2*((R/S)^2+(X)^2)/((3/Wms)*(R/S)))
+Vl=Vph2*sqrt(3)
+printf('\n\n Torque=%0.1f N-m\n\n',T)//The answer provided in the textbook is wrong
+printf('\n\n Line Voltage to be imposed=%0.1f Volts\n\n',Vph2)