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+clc
+//variable Initialisation
+Vl=440//Voltage Input in Volts
+f1=50//supply frequency in Hz
+P=25e+3//power rating in Watts
+N1=950//Rotor Speed in rpm
+Z=0.1+(%i*3)//Rotor Impedance
+pole=6//No of poles
+f2=80//Supply 2 frequency in Hz
+//Solution
+V=Vl/sqrt(3)//Phase Voltage in Volts
+Wm=2*%pi*N1/60
+Tfl=P/Wm//Full load Torque in N-m
+Ns=120*f2/pole
+Ws=2*%pi*Ns/60
+Z2=Z*(f2/f1)//Rotor Impedance at 80 Hz
+S=3*(V^2)*0.5/(Ws*((abs(Z2))^2)*Tfl)
+Nr=Ns*(1-S)
+Rl=real(Z)
+Xl=imag(Z2)
+Smax=(Rl/Xl)
+Tmax=3*(V^2)/(Ws*2*Xl)
+printf('\n\n The Motor speed=%0.1f rpm\n\n',Nr)//The answers vary due to round off error
+printf('\n\n The Slip at which maximum torque occurs=%0.1f\n\n',Smax)
+printf('\n\n The maximum Torque=%0.1f\n\n',Tmax)