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

---
 695/CH3/EX3.11/Ex3_11.txt | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100755 695/CH3/EX3.11/Ex3_11.txt

(limited to '695/CH3/EX3.11/Ex3_11.txt')

diff --git a/695/CH3/EX3.11/Ex3_11.txt b/695/CH3/EX3.11/Ex3_11.txt
new file mode 100755
index 000000000..dff2b8f88
--- /dev/null
+++ b/695/CH3/EX3.11/Ex3_11.txt
@@ -0,0 +1,34 @@
+//Caption:Find the equivalent circuit parameters of the transformer reffered to LV side and also calculate the efficiency
+//Exa:3.11
+clc;
+clear;
+close;
+V1=200;//in volts
+I_o=0.8;//in amperes
+W_o=80;//in watts
+pf=W_o/(V1*I_o);
+I_w=I_o*pf;
+I_m=I_o*sqrt(1-pf^2);
+R_O=V1/I_w;
+X_O=V1/I_m;
+a=200/400;
+V_sc=25;//in volts
+I_sc=10;//in amperes
+P_sc=90;//in watts
+Z_O2=V_sc/I_sc;
+R_O2=P_sc/I_sc^2;
+X_O2=sqrt(Z_O2^2-R_O2^2);
+R_O1=a^2*R_O2;
+X_O1=a^2*X_O2;
+I_2=12;
+I_1=I_2/a;
+V2=sqrt((V1*pf+I_1*R_O1)^2+(V1*sqrt(1-pf^2)+I_1*X_O1)^2);
+P_iron=80;//in watts
+P_cu=(12/10)^2*90;
+P_total=P_cu+P_iron;
+Eff=6000*0.8/(6000*0.8+P_total);
+disp(R_O,'R_O (in ohms)=');
+disp(X_O,'X_O Magnetising reactance (in ohms)=');
+disp(R_O1,'Equivalent Resistance reffered to LV Side (in ohms)=');
+disp(X_O1,'Equivalent Reactance reffered to LV Side (in ohms)');
+disp(Eff*100,'Efficiency (in %)=')
\ No newline at end of file
-- 
cgit