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

---
 2345/CH15/EX15.40/Ex15_40.sce | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100755 2345/CH15/EX15.40/Ex15_40.sce

(limited to '2345/CH15/EX15.40')

diff --git a/2345/CH15/EX15.40/Ex15_40.sce b/2345/CH15/EX15.40/Ex15_40.sce
new file mode 100755
index 000000000..cf87200c5
--- /dev/null
+++ b/2345/CH15/EX15.40/Ex15_40.sce
@@ -0,0 +1,18 @@
+//Finding current
+//Example 15.40(pg. 418)
+clc
+clear
+phi=70000/(10^8)//flux to be set up in Wb since 10^8lines =1Wb
+d=0.03//diameter in m
+a=%pi*d*d/4//area of cross section in m^2
+B=phi/a//flux density in Wb/m^2
+Lg=0.002//length of air gap in m
+Ls=(%pi*0.2)-Lg//length of steel path
+Uo=4*%pi*(10^-7)//absolute permitivity
+Ur=800//relative permitivity of steel
+Hg=B/Uo
+Hs=B/(Uo*Ur)
+AT=(Hg*Lg)+(Hs*Ls)//total ampere turns required 
+N=500// no of turns
+I=AT/N//exciting current in amps
+printf('Thus the value of exciting current is %2.3f A',I)
-- 
cgit