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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
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