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+// FUNDAMENTALS OF ELECTICAL MACHINES 
+// M.A.SALAM 
+// NAROSA PUBLISHING HOUSE 
+// SECOND EDITION
+
+// Chapter 3 : TRANSFORMER AND PER UNIT SYSTEM
+// Example : 3.14
+
+clc;clear; // clears the console and command history 
+
+// Given data
+E_1 = 500   // secondary induced voltages in V
+E_2 = 450   // secondary induced voltages in V
+kVA_1 = 100 // kVA ratings of transformer
+kVA_2 = 200 // kVA ratings of transformer
+Z_1 = 0.05  // impedance of transformer
+Z_2 = 0.08  // impedance of transformer
+
+// caclulations 
+Z1 =Z_1*E_1/(kVA_1*10^3/E_1)  // actual impedance of 1st transformer in ohm
+Z2 = Z_2*E_2/(kVA_1*10^3/E_2) // actual impedance of 2nd transformer in ohm
+Z = %i*(Z1+Z2)
+I_c = (E_1-E_2)/(Z)          // value of the circulating current
+
+// display the result 
+disp("Example 3.14 solution");
+printf(" \n Value of the circulating current \n I_c = %.3f<%.f A \n", abs(I_c),atand(imag(I_c),real(I_c)));
+