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//Electric Power Generation, Transmission and Distribution by S.N.Singh
//Publisher:PHI Learning Private Limited
//Year: 2012 ; Edition - 2
//Example 15.4
//Scilab Version : 6.0.0 ; OS : Windows
clc;
clear;
V=110; //Line voltage in kV
r=1; //Conductor radius in cm
p1=5; //Permittivitie of the material A
p2=4; //Permittivitie of the material B
p3=2; //Permittivitie of the material C
G1=50; //Permissible stress of the material A in kV/cm
G2=40; //Permissible stress of the material B in kV/cm
G3=30; //Permissible stress of the material C in kV/cm
r1=p1*r*G1/(p2*G2); //Outer radius of the material A in cm
r2=p2*r1*G2/(p3*G3); //Outer radius of the material B in cm
R=exp(1.638); //Outer radius of the material C in cm(solving the eqn 15.24 in the book )
printf("\nThe minimum internal sheath radius of the cable is %.2f cm",R)
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