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// Example 5.15
// Determine the machine parameters in ohms
// Page No. 213
clc;
clear;
close;
// Given data
V=460; // Motor voltage
hp=50; // Motor horsepower
r1=0.021; // Resistance
r2=0.020;
x1=0.100; // Reactance
x2=0.0178;
rfe=20;
Xm=3.68; // Motor reactance
// Machine parameters in ohms
Vbase=V/sqrt(3); // Base voltage
Pbase=hp*746/3; // Base power
Zbase=Vbase^2/Pbase; // Base impedance
R1=r1*Zbase;
X1=x1*Zbase;
R2=r2*Zbase;
X2=x2*Zbase;
Rfe=rfe*Zbase;
XM=Xm*Zbase;
// Display result on command window
printf("\n Motor resistance 1 = %0.3f Ohm",R1);
printf("\n Motor reactance 1 = %0.3f Ohm",X1);
printf("\n Motor resistance 2 = %0.3f Ohm",R2);
printf("\n Motor reactance 2 = %0.3f Ohm",X2);
printf("\n Field resistance = %0.2f Ohm",Rfe);
printf("\n Reactance of motor = %0.2f Ohm",XM);
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