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/CH9/EX9.12/ch9_12.sci | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100755 503/CH9/EX9.12/ch9_12.sci

(limited to '503/CH9/EX9.12/ch9_12.sci')

diff --git a/503/CH9/EX9.12/ch9_12.sci b/503/CH9/EX9.12/ch9_12.sci
new file mode 100755
index 000000000..92d922b75
--- /dev/null
+++ b/503/CH9/EX9.12/ch9_12.sci
@@ -0,0 +1,26 @@
+//find line current and starting torque with direct switching, stator resistance starting, autotransformer starting, star delta starting, autotransformer ratio give 1 pu
+
+clc;
+//I_s/I_fl=6;
+s_fl=0.05;
+disp('by direct switching');
+Is=6;disp(Is,'line current(pu)');
+T=Is^2*s_fl;disp(T,'torque(pu)');
+
+disp('by stator resistance starting');
+Is=2;disp(Is,'line current(pu)');        //given
+T=Is^2*s_fl;disp(T,'torque(pu)');
+
+disp('by autotransformer starting');
+x=2/6;
+Is_motor=2;
+Is=Is_motor*x;disp(Is,'line current(pu)');
+T=Is^2*s_fl;disp(T,'torque(pu)');
+
+disp('by star delta starting');
+Is=(1/3)*6;disp(Is,'line current(pu)');
+T=Is^2*s_fl*3;disp(T,'torque(pu)');
+
+disp('by autotransformer starting');
+Ts=1;
+x=sqrt(Ts/((6^2)*s_fl));disp(x,'x');
\ No newline at end of file
-- 
cgit