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

---
 1733/CH7/EX7.9/7_9.sce | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100755 1733/CH7/EX7.9/7_9.sce

(limited to '1733/CH7/EX7.9/7_9.sce')

diff --git a/1733/CH7/EX7.9/7_9.sce b/1733/CH7/EX7.9/7_9.sce
new file mode 100755
index 000000000..a00a6027d
--- /dev/null
+++ b/1733/CH7/EX7.9/7_9.sce
@@ -0,0 +1,20 @@
+//7.9
+clc;
+Vm=230*2^0.5;
+Vf=2*Vm/%pi;
+Rf=200;
+If=Vf/Rf;
+T=50;
+Kt=0.8;
+Ia=T/(Kt*If);
+w=2*%pi*900/60;
+Vb=Kt*w*If;
+Ra=0.3;
+Va=Vb+Ia*Ra;
+alph_a=acosd(Va*%pi/Vm-1)
+printf("Firing angle of converter in the armature circuit=%.3f degree",alph_a)
+Po_a=Va*Ia;
+Iin=Ia*((%pi-alph_a*%pi/180)/%pi)^0.5;
+VA_input=Iin*230;
+pf=Po_a/VA_input;
+printf("\npower factor of converter in the armature circuit=%.3f lagging",pf)
-- 
cgit