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

---
 431/CH3/EX3.29/EX3_29.sce | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100755 431/CH3/EX3.29/EX3_29.sce

(limited to '431/CH3/EX3.29/EX3_29.sce')

diff --git a/431/CH3/EX3.29/EX3_29.sce b/431/CH3/EX3.29/EX3_29.sce
new file mode 100755
index 000000000..7fe105d0a
--- /dev/null
+++ b/431/CH3/EX3.29/EX3_29.sce
@@ -0,0 +1,26 @@
+//Calculate efficiency of transformer //Chapter 3
+//Example 3.30
+//page 237
+clear;
+clc;
+disp("Example 3.30")
+kVA=10;                    //rating of the transformers
+V1=400;                    //primary voltage in volts
+V2=200;                    //secondary voltage in volts
+f=50;                      //frequency in hertz
+MAXeffi=0.96;              //maximium efficiency
+output1=(kVA*0.75);        //output at 75% of full load
+input1=(output1/MAXeffi);
+printf("\nInput at 75percent of full load=%fkW",input1);
+TL=input1-output1;
+printf("\nTotal losses=%fkW",TL);
+Pi=TL/2;
+Pc=TL/2;
+disp("Maximiunm efficiency occurs at 3/4th of full load")
+Pc=Pi/(3/4)^2;
+printf("\nThus,total losses on full load=%fW",((Pc+Pi)*1000));
+pf=0.8;               //power factor lagging
+effi=(kVA*pf*100)/((kVA*pf)+(Pc+Pi));
+printf("\nEfficiency on full load. 0.8 power factor lagging=%fpercent",effi)
+
+
-- 
cgit