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+//Chapter-3, Example 3.7, Page 3.18
+//=============================================================================
+clc
+clear
+
+//INPUT DATA
+P=6;//Number of poles
+f=50;//Supply frequency in Hz
+R2=0.4;//Rotor reisitance in ohm
+X2=4;//Rotor standstill reactance in ohm
+T1=2;//Ratio of maximum torque to starting torque
+
+//CALCULATIONS
+Ns=(120*f)/P;//Synchronous speed in rpm
+Sm=(R2/X2);//Slip at maximum torque
+NTM=(Ns*(1-Sm));//Speed of the motor at maximum torque in rpm
+T=((R2^2+X2^2)/(2*R2*X2));//Ratio of maximum torque to starting torque
+Rext=(sqrt(X2^2/((2*T1)-1))-R2);//Additional resistance required for the ratio of maximum torque to the statring torque to be 2 in ohm
+
+//OUTPUT
+mprintf('a)Speed of the motor at maximum torque is %i rpm \n b)Ratio of maximum torque to starting torque is %3.2f \n c)Additional resistance required for the ratio of maximum torque to the starting torque to be 2 is %3.1f ohm',NTM,T,Rext)
+
+//=================================END OF PROGRAM==============================