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+// Example 9.3
+// Determine (a) Frequency of generator A (b) Frequency of generator B 
+// (c) Frequency of bus
+// Page 358
+
+clc;
+clear;
+close;
+
+// Given data
+GSR=0.020;                   // Governor speed regulation
+Frated=60;                   // Rated frequency
+deltaPa=100;                 // Change in load (200-100 =100 KW)
+Prated=500;                  // Rated power of both generators
+       
+
+// (a) Frequency of generator A 
+deltaFa=(GSR*Frated*deltaPa)/Prated; // Change in frequency due to change in load
+Fa=Frated+deltaFa;                   // Frequency of generator A
+
+// (b) Frequency of generator B
+deltaFb=0.24;                        // Since both machines are identical
+Fb=Frated-deltaFb;
+
+// (c) Frequency of bus
+Fbus=Fb;                             // Bus frequency is frequency of generator B
+
+// Display result on command window
+printf("\n Frequency of generator A = %0.2f Hz ",Fa);
+printf("\n Frequency of generator B = %0.2f Hz ",Fb);
+printf("\n Frequency of bus = %0.2f Hz ",Fbus);
+