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+// FUNDAMENTALS OF ELECTICAL MACHINES 
+// M.A.SALAM 
+// NAROSA PUBLISHING HOUSE 
+// SECOND EDITION
+
+// Chapter 9 : SYNCHRONOUS GENERATOR
+// Example : 9.8
+
+clc;clear; // clears the console and command history 
+
+// Given data
+kVA = 50    // kVA ratings
+V_t = 220   // terminal voltage in V
+R_a = 0.011 // effective resistance in ohm
+X_s = 0.09  // synchronous reactance in ohm
+
+// caclulations 
+phi = acosd(0.85)                                  // since power factor in 0.85
+I_a = kVA*10^3/V_t                                // armature current in A
+E_f = sqrt((V_t*cosd(phi)+I_a*R_a)^2+(V_t*sind(phi)+I_a*X_s)^2) // induced voltage per phase in V
+VR = ((E_f-V_t)/V_t)*100                         // voltage regulation
+
+// display the result 
+disp("Example 9.8 solution"); 
+printf(" \n No-load induced voltage per phase \n E_f = %.1f V \n", E_f );
+printf(" \n Voltage regulation is \n VR = %.1f percent \n", VR );
+