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/EX2.19/Exa2_19.sce | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100755 1730/CH2/EX2.19/Exa2_19.sce

(limited to '1730/CH2/EX2.19/Exa2_19.sce')

diff --git a/1730/CH2/EX2.19/Exa2_19.sce b/1730/CH2/EX2.19/Exa2_19.sce
new file mode 100755
index 000000000..1cc44cf54
--- /dev/null
+++ b/1730/CH2/EX2.19/Exa2_19.sce
@@ -0,0 +1,17 @@
+//Exa2.19
+clc;
+clear;
+close;
+disp("Let R0 be the resistance of the coil at 0 degree C and alpha0 be its temperature coefficient of resistance at 0 degree C");
+disp("Resistance at 20 degree C, 18 = R0 * (1+20*alpha0)                (i)");
+disp("Resistance at 50 degree C, 20 = R0 * (1+50*alpha0)                (ii)");
+disp("Dividing Eq.(ii) by Eq.(i), we have");
+disp("20/18= (1+50*alpha0)/(1+20*alpha0)");
+disp("or alpha0 = 1/250=0.004 ohm/ohm/degree C");
+disp("If t degree C is the temperature of coil when its resistance is 21 ohm, then");
+disp("21=R0*(1+0.004*t)");
+disp("Dividing Eq.(iii) by Eq.(ii), we have");
+disp("21/20=(1+0.004*t)/(1+50*0.004)");
+disp("or t=65 degree C");
+disp("Temperature rise = t-surrounding temperature = 65 - 15 = 50 degree C");
+
-- 
cgit