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

---
 2360/CH3/EX3.21/ex3_21.sce | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 2360/CH3/EX3.21/ex3_21.sce

(limited to '2360/CH3/EX3.21')

diff --git a/2360/CH3/EX3.21/ex3_21.sce b/2360/CH3/EX3.21/ex3_21.sce
new file mode 100755
index 000000000..c020180a6
--- /dev/null
+++ b/2360/CH3/EX3.21/ex3_21.sce
@@ -0,0 +1,20 @@
+// Exa 3.21
+format('v',7);clc;clear;close;
+// Given data
+r = 2;//radius in m
+r = r * 10^3;// in mm
+d = 200;//deflection in mm
+To = 3.1415;// in sec   
+J = 2*10^-6;// in kg-m^2
+i = 1;// in µA
+i = i * 10^-6;// in A
+// d = 2*r*theta_f;
+theta_f = d/(2*r);// in rad
+// To = 2*%pi * (sqrt( J/K ));
+K = 4*%pi^2*J/To^2;// in Nm/A
+// theta_f = (G*i)/K;
+G = (theta_f*K)/i;// in Nm/A
+// The required resistance to obtain critical damping 
+Rc = G^2/( 2*sqrt(J*K));// in ohm
+Rc = Rc * 10^-3;// in k ohm
+disp(Rc,"The required resistance to obtain critical damping in kΩ is");
-- 
cgit