From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 1730/CH2/EX2.41/Exa2_41.sce | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100755 1730/CH2/EX2.41/Exa2_41.sce (limited to '1730/CH2/EX2.41/Exa2_41.sce') diff --git a/1730/CH2/EX2.41/Exa2_41.sce b/1730/CH2/EX2.41/Exa2_41.sce new file mode 100755 index 000000000..e42fa370e --- /dev/null +++ b/1730/CH2/EX2.41/Exa2_41.sce @@ -0,0 +1,31 @@ +//Exa2.41 +clc; +clear; +close; +// given data +t1=20;// in degree C +t2=36;// in degree C +alpha_20=0.0043;// in per degree C (Temperature Coefficient) +InsulationResistance=480*10^6;// in ohm +copper_cond_res=0.7;// in ohm (copper conductor resistance) +l=500*10^-3;// in kilo meter (length) +R1_desh=InsulationResistance * l;// in ohm + +// From Formula log(R2_desh)= log(R1_desh-K*(t2-t1)) +// K= 1/(t2-t1)*log(R1_desh/R2_desh) +// since when t2-t1=10 degree C and R1_desh/R2_desh= 2 + +K=1/10*log(2); + +// (i) Insulation resistance at any temperature t2, R2_desh is given by + logR2_desh= log(R1_desh)-(t2-t1)/10* log(2); + R2_desh= %e^logR2_desh + + disp("(i) Insulation resistance at any temperature : "+string(R2_desh*10^-6)+" Mega ohm"); + +// (ii) + R_20= copper_cond_res/l;// in ohm + R_36=R_20*[1+alpha_20*(t2-t1)]; + + disp("Resistance at 36 degree C is : "+string(R_36)+" ohm") + \ No newline at end of file -- cgit