From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 1319/CH1/EX1.5/1_5.sce | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 1319/CH1/EX1.5/1_5.sce

(limited to '1319/CH1/EX1.5')

diff --git a/1319/CH1/EX1.5/1_5.sce b/1319/CH1/EX1.5/1_5.sce
new file mode 100644
index 000000000..c7babac38
--- /dev/null
+++ b/1319/CH1/EX1.5/1_5.sce
@@ -0,0 +1,45 @@
+// To find the inductance of a choke to operate a 120V 500W lamp at 230V
+
+clc;
+clear;
+
+V=120;
+W=500;
+Rl=(V^2)/W;
+I=W/V; // Circuit Current
+
+// Q of a choke means the ratio of its inductive reactance to its resistance
+
+Q=2;
+f=60;
+w=2*%pi*f;
+
+Vs=230; // Supply Voltage
+
+Xcir=230/I;
+
+L=poly([0 1],'L','c');
+
+Xl=w*L;
+
+Rc=Xl/2; // Q utilised
+
+// total resistance 
+
+Rt=Rl+Rc;
+
+
+ind=(Rt^2)+(Xl^2)-(Xcir^2);// Characteristic equation to find L
+
+L=roots(ind);
+
+disp(ind,'The Characteristic equation to find L is')
+
+if(imag(sqrt(L(1))))
+    L=L(2);
+else
+    L=L(1);
+end
+
+
+disp('H',L,'The inductance of the choke coil = ')
-- 
cgit