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//Electric machines and power systems by Syed A Nasar
//Publisher:Tata McGraw Hill
//Year: 2002 ; Edition - 7
//Example 5.3
//Scilab Version : 6.0.0 ; OS : Windows
clc;
clear;
I=50; //current in A
pf=0.707; //power factor
v=220; //voltage in v
xs=1.27; //synchronous reactance/phase in ohm
pm=33*10^3; //power developed by the motor in w
pa=30; //power angle
phia=30; //phase angle
v1=220/3^(1/2);
pd=(pm*10^3)/3;
v0=(pd*xs)/(v1*sin(pa));
Ia=v1/xs;
kvar=3^(1/2)*v*Ia*sind(phia)/10^3;
Il=I-Ia;
Phi=atan(.122);
Pfn=cos(Phi);
printf('KVAR is %f\n',kvar)
printf('power factor of the motor is %f',Pfn)
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