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// To determine the parameters of a toroid
clc;
clear;
//Arc length of different materials
lni=0.3; // nickel iron alloy
lss=0.2;//Silicon Steel
lcs=0.1;//Cast steel
A=1*(10^-3); // Area of cross section of Toroid
N=100; // Hundred Turns
phi=6*(10^-4); // Flux
B=0.6; // Flux densities
m0=4*%pi*(10^-7);
//Field intensities
Hni=10; // Ni alloy
Hss=77;// Si Steel
Hcs=270; // CAst steel
mmf=(Hni*lni)+(Hss*lss)+(Hcs*lcs); // Total mmf
B=phi/A;
I=mmf/N;
//P = Permeability, RP = Relative permeablity
//For Nickel Alloy
mni=B/Hni; // P
mrni=mni/m0; // RP
//For Si Steel
mss=B/Hss; //P
mrss=mss/m0; // RP
//For Cast Steel
mcs=B/Hcs; //P
mrcs=mcs/m0; // RP
deff('x=rel(y,z)','x=(y*z)/phi'); // Fucntion to find out Reluctance
//Reluctances
Rni=rel(Hni,lni);
Rss=rel(Hss,lss);
Rcs=rel(Hcs,lcs);
printf('i) The mmf required to establish a magnetic flux of 6 *(10^-4) Wb = %g AT\n',mmf)
printf('ii) The Current through the coil = %g A\n',I)
printf('iii) Relative permeability and reluctance of each ferro magnetic material\n')
printf(' Nickel Iron alloy is %g and %g ohms \n',mrni,Rni)
printf(' Silicon Steel is %g and %g ohms \n',mrss,Rss)
printf(' Cast Steel is %g and %g ohms \n',mrcs,Rcs)
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