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+// FUNDAMENTALS OF ELECTICAL MACHINES 
+// M.A.SALAM 
+// NAROSA PUBLISHING HOUSE 
+// SECOND EDITION
+
+// Chapter 3 : TRANSFORMER AND PER UNIT SYSTEM
+// Example : 3.11
+
+
+clc;clear; // clears the console and command history 
+
+// Given data
+V_1 = 200  // voltage in V
+f = 50     // frequency in Hz
+I_0 = 0.6  // single phase current in A
+P_0 = 80   // power in W
+
+// caclulations 
+cos_phi0 = P_0/(V_1*I_0) // power factor
+sin_phi0 = 0.74          // from above expression
+I_w = I_0*cos_phi0       // working component of no load current in A
+I_m = I_0*sin_phi0       // working component of no load current in A
+R_0 = V_1/I_w            // no load circuit resistance in ohm
+X_0 = V_1/I_m            // no load circuit reactance in ohm
+
+// display the result 
+disp("Example 3.11 solution");
+printf(" \n No-load circuit resistance \n R_0 = %.2f ohm \n", R_0);
+printf(" \n No-load circuit reactance \n X_0 = %.1f ohm \n", X_0);