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+clc
+clear
+
+//input
+p=6;//number of poles
+f=50;//frequency in hertz
+n=3;//number of phases
+t=160;//total torque in newton meter
+fs=120;//slip frequency in cycles/min
+tf=12;//torque lost in friction
+sl=750;//stator losses in watts
+
+//calculations
+s=fs/(60*f);//slip in per unit
+w=(2*%pi*f)/n;//speed of motor in rad/sec
+wr=w*(1-s);//rotor speed in rad/sec
+rinp=t*w;//rotor input in watts
+rc=s*rinp;//rotor copper losses in watts
+sinp=rinp+sl;//stator input in watts
+Sinp=sinp/1000;//stator input in kilowatts
+tout=t-tf;//output torque in newton meter
+pout=tout*wr;//power output in watts
+eff=pout/sinp;//efficiency in per unit
+
+//output
+mprintf('the rotor loss is %3.0fW, the input to the motor is %3.2f kW and the motor efficiency is %3.2f p.u.',rc,Sinp,eff)