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+
+// ELECTRICAL MACHINES
+// R.K.Srivastava
+// First Impression 2011
+// CENGAGE LEARNING INDIA PVT. LTD
+
+// CHAPTER : 5 : INDUCTION MACHINES
+
+// EXAMPLE : 5.27
+
+clear ; clc ; close ; // Clear the work space and console
+
+
+// GIVEN DATA
+
+m = 3;                          // Total Number of phase in Induction Motor
+p = 2;                          // Total number of Poles of Induction Motor
+f = 50;                         // Frequency in Hertz
+V = 440;                        // Operating Voltage of the Inductuon Motor
+R1 = 0.25;                      // Circuit Parameter in Ohms
+R2 = 0.25;                      // Circuit Parameter in Ohms
+X1 = 0.75;                      // Circuit Parameter in Ohms
+X2 = 0.75;                      // Circuit Parameter in Ohms
+out_hp = 50;                    // Output of the induction motor in HP
+
+
+// CALCULATIONS
+
+V1 = V/sqrt(3);                                              // Phase Voltage in Volts
+I = (out_hp*746)/(V*sqrt(3));                                // Rated Current in Amphere
+sm = R2/(sqrt(R1^2+(X1+X2)^2));                              // Slip at Maximum torque both its in Positive and negative sign
+Ws = 2*%pi*((120*f/p)*(1/60));                               // Angular Roatation in Radians per Seconds
+Tm = (3*V1^2)/((2*Ws)*(R1+sqrt((R1^2)+(X1+X2)^2)));          // Maximum torque during motoring in Newton-Meter
+Tg = -(3*V1^2)/((2*Ws)*(-R1+sqrt((R1^2)+(X1+X2)^2)));        // Maximum torque during generating in Newton-Meter
+
+// For Case (a) slip = 0.05
+
+s_a = 0.05;                                                  // Slip
+T_a = (2*Tm)/((s_a/sm)+(sm/s_a));                            // Torque in Newton-Meter
+
+// For Case (b) slip = -0.05
+
+s_b = -0.05;                                                  // Slip
+T_b = (2*Tg)/((s_b/sm)+(sm/s_b));                             // Torque in Newton-Meter
+
+
+// DISPLAY RESULTS
+
+disp("EXAMPLE : 5.27 : SOLUTION :-");
+printf("\n Maximim Torque during Motoring, Tm = %.f N-m \n",Tm)
+printf("\n Maximim Torque during Generating, Tm = %.2f N-m \n",Tg)
+printf("\n For Case (a) slip = 0.05 \n ")
+printf("\n (a.1) Torque, T = %.2f Nm \n",T_a)
+printf("\n For Case (b) slip = -0.05 \n ")
+printf("\n (b.1) Torque, T = %.2f Nm \n",T_b)
+