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+// Example 1.9
+// Computation of (a) Frequency of the generated emf (b) Speed of the rotor
+//Page No. 31
+
+clc;
+clear all;
+close;
+
+// Given data
+Erms=100;            // Voltage generated in armature coil
+N=15;                // Number of turns in armature coil
+phimax=0.012;        // Flux per pole
+P=4;                 // Number of poles
+
+// (a)  frequency of the generated emf
+f=Erms/(4.44*N*phimax);      
+
+// (b) speed of the rotor
+n=2*f/P;   
+nmin=n*60;               
+
+//Display result on command window
+printf("\n Frequency of the generated emf = %0.0f Hz ",f);
+printf("\n Speed of the rotor = %0.2f  r/s",n);
+printf("\n Speed of the rotor = %0.0f  r/min",nmin);