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//Electric machines and power systems by Syed A Nasar
//Publisher:TataMcgraw Hill
//Year: 2002 ; Edition - 7
//Example 2.2
//Scilab Version : 6.0.0 ; OS : Windows
clc;
clear;
bg=1; //flux density of air gap in T
u0=4*3.14*10^-7; //permiability of free space
lg=0.1*10^-3; //length of air gap in m
sf=0.9; //stacking factor of M19 steel
lm=100*10^-3; //length of the steel in m
h=130; //flux density in At/m
hg=bg/u0; //magnetic field intensity in A/m
fg=hg*lg; //reluctance drop or magnetic potential across gap in A
bm=bg/sf; //flux density in magnetic material in T
Fm=h*0.1; //magnetic potenial of other member in At
AT=Fm+fg; //the required ampere turn in At
printf('the required ampere turn in the exciting coil is %2f in At',AT)
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