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

---
 3760/CH1/EX1.36/Ex1_36.sce | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 3760/CH1/EX1.36/Ex1_36.sce

(limited to '3760/CH1/EX1.36/Ex1_36.sce')

diff --git a/3760/CH1/EX1.36/Ex1_36.sce b/3760/CH1/EX1.36/Ex1_36.sce
new file mode 100644
index 000000000..ad13631ce
--- /dev/null
+++ b/3760/CH1/EX1.36/Ex1_36.sce
@@ -0,0 +1,23 @@
+clc;
+E1=230; // primary rating of transformer 1 and transformer 2
+E2=400; // secondary rating of transformer 1
+e2=410; // secondary rating of transformer 2
+iv=25; // current feeded by voltage regulator to h v series winding
+pc=200; // core loss in each transformer
+r=1 // assuming resistance of transformer to be 1
+x=3*r // as per question leakage reactance is thrice of resistance 
+il1=(iv*E2)/E1; // primary current of transformer 1
+il2=(iv*e2)/E1; // primary current of transformer 2
+pf=r/sqrt(r^2+x^2); // power factor during short circuit
+// As per the circuit diagram given in question, by Kirchoffs current law current through current coil of wattmeter W1 is given by
+I=il2-il1;
+// 2*core loss is the reading of wattmeter 2
+W=E1*I*pf; // reading of wattmeter 1 connected on l v side
+// in circuit diagram if terminal a is connected to c and terminal b is connected to d the current I and Io (no load current) flow in the same direction of current coil of Wattmeter.Hence its reading is increased to 
+Wt=2*pc+W; 
+printf('reading of wattmeter as per the connection described is %f W\n',Wt);
+// in circuit diagram if terminal c is connected to b and terminal d is connected to a the current I and Io (no load current) flow in the opposite direction through current coil of Wattmeter.Hence its reading is decreased to 
+Wt=2*pc-W;
+printf('reading of wattmeter as per the connection described is %f W',Wt);
+
+ 
-- 
cgit