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+// Example 5.20
+// Computation of (a) Resistance of the resistors required to limit the locked 
+// rotor current to 3 times rated current (b) Stator voltage per phase at 
+// locked rotor (c) Expected minimum locked rotor torque when starting as a 
+// percent of rated torque
+// Page No. 235
+
+clc;
+clear all;
+close;
+
+// Given data
+Ilr=3*78;                 // Locked rotor current
+Vbranch=132.79;           // Branch voltage
+Rlr=0.2549;               //Locked rotor resistance
+Xlr=0.0978;               //Locked rotor impedance
+f=60;                     //Frequency of motor 
+Zlr=0.273;
+
+// (a) Resistance of the resistors required to limit the locked rotor current 
+// to 3 times rated current
+Rex=sqrt((Vbranch^2/Ilr^2)-(Rlr^2))-Xlr;
+
+// (b) Stator voltage per phase at locked rotor 
+IZlr=Ilr*Zlr;
+VT1_N=IZlr;
+
+// (c) Expected minimum locked rotor torque when starting as a percent of 
+// rated torque
+// From table 5.1 --> Minimum locked rotor torque = 150% rated torque
+
+// Display result on command window
+
+printf("\n Resistance of the resistors required = %0.4f Ohm ",Rex);
+printf("\n Stator voltage per phase at locked rotor = %0.2f V ",VT1_N);
+disp('Expected minimum locked rotor torque = 1.5 Trated');
+
+