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//Electric Power Generation, Transmission and Distribution by S.N.Singh
//Publisher:PHI Learning Private Limited
//Year: 2012 ; Edition - 2
//Example 15.2
//Scilab Version : 6.0.0 ; OS : Windows
clc;
clear;
r=1.5; //Conductor radius in cm
R=3; //Lead sheath radius in cm
V=33; //Operating voltage in kV
E_max=V/(r*log(R/r)); //Maximum value of electric stress in kV/cm
E_min=V/(R*log(R/r)); //Minimum value of electric stress in kV/cm
r1=R/2.718; //Optimum value of conductor radius in cm
E_max1=V/(r1*log(R/r1)); //Smallest value of Maximum stress in kV/cm
printf("\nMaximum and Minimum values of electrical stress is %.2f kV/cm and %.2f kV/cm",E_max,E_min);
printf("\nOptimal value of conductor radius is %.3f cm and the smallest value of the maximum stress is %.2f kV/cm",r1,E_max1);
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