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+//CHAPTER 11- SINGLE PHASE INDUCTION MOTOR
+//Examle 1
+
+disp("CHAPTER 11");
+disp("EXAMPLE 1");
+
+//VARIABLE INITIALIZATION
+P=6;                      //number of poles
+f=50;                     //frequency in Hz
+pow_fd=160;               //gross power absorbed by forward field in W
+pow_bd=20;                //gross power absorbed by backward field in W
+N_r=950;                  //rotor speed in rpm
+loss=75;                  //no load frictional loss in W
+
+//SOLUTION
+P_g=pow_fd-pow_bd;        //air-gap power
+N_s=(120*f)/P;            //synchronous speed
+S=(N_s-N_r)/N_s;          //slip
+P_m=P_g*(1-S);            //mechanical power
+P_o=P_m-loss;             //output or shaft power
+w=(2*%pi*N_r)/60;
+T=P_o/w;                 
+disp(sprintf("The shaft torque is %f N-m",T));
+
+//END
+