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

---
 503/CH8/EX8.13/ch8_13.sci | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100755 503/CH8/EX8.13/ch8_13.sci

(limited to '503/CH8/EX8.13/ch8_13.sci')

diff --git a/503/CH8/EX8.13/ch8_13.sci b/503/CH8/EX8.13/ch8_13.sci
new file mode 100755
index 000000000..ab3fdbb45
--- /dev/null
+++ b/503/CH8/EX8.13/ch8_13.sci
@@ -0,0 +1,33 @@
+//to determine excitation emf, torque angle,stator current, pf, max power, kVAR delivered
+
+clc;
+j=sqrt(-1);
+P=10000;
+V=400;
+Ia=P/(sqrt(3)*V);
+pf=.8;
+phi=acosd(pf);
+Iaa=Ia*complex(cosd(-phi),sind(-phi));
+Vt=V/sqrt(3);
+X=16;
+Ef=Vt+j*X*Iaa;
+disp(abs(Ef),'excitation emf(V)');
+dl=atand(imag(Ef)/real(Ef));
+disp(dl,'torque angle');
+
+Pe=P*pf;
+Eff=abs(Ef)*1.2;
+dl=(Pe/3)*X/(Eff*Vt);
+ta=asind(dl);
+disp(ta,'torque angle');
+Ia=(Eff*complex(cosd(ta),sind(ta))-Vt)/(j*X);
+disp(abs(Ia),'stator current(A)');
+disp(cosd(-atand(imag(Ia)/real(Ia))),'pf');
+
+Ef=413;
+Pemax=Ef*Vt/X;
+Ia=(Ef*complex(cosd(90),sind(90))-Vt)/(j*X);
+disp(abs(Ia),'stator current(A)');
+disp(cosd(-atand(imag(Ia)/real(Ia))),'pf');
+
+Qe=(imag(Ia)/real(Ia))*Pe;disp(Qe,'kVar delivered');
\ No newline at end of file
-- 
cgit