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+//Chapter 5:DC Motor Drives
+//Example 1
+clc;
+
+//Variable Initialization
+
+//Motor ratings
+V1=200     //rated voltage in V
+Ia1=10.5   //rated current in A
+N1=2000    //speed in rpm
+Ra=0.5     //armature resistance in ohms
+Rs=400     //field resistance in ohms
+V2=175     //drop in source voltage in V
+
+//Solution
+
+flux2=V2/V1
+Ia2=1/flux2*Ia1    //since load torque
+E1=V1-Ia1*Ra
+E2=V2-Ia2*Ra
+N2=(E2/E1)*(1/flux2)*N1
+
+//Result
+mprintf("\nMotor speed is:%.1f rpm",N2)
+//Answer provided in the book is incorrect