From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

---
 3760/CH6/EX6.44/Ex6_44.sce | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 3760/CH6/EX6.44/Ex6_44.sce

(limited to '3760/CH6/EX6.44/Ex6_44.sce')

diff --git a/3760/CH6/EX6.44/Ex6_44.sce b/3760/CH6/EX6.44/Ex6_44.sce
new file mode 100644
index 000000000..a73fecad5
--- /dev/null
+++ b/3760/CH6/EX6.44/Ex6_44.sce
@@ -0,0 +1,23 @@
+clc;
+p=6; // number of poles
+m=3; // number of phases
+f=50; // frequency of motor
+P=40000; // rated power of induction motor
+v=400; // rated voltage of induction motor
+// results of blocked  rotor test
+vb=200; // applied voltage
+ib=110; // applied current
+pf=0.4; // power factor
+f1=45; // frequency at starting torque is to be determined
+e=380; // voltage at starting torque is to be determined
+vbp=vb/sqrt(3); // per phase voltage during blocked  rotor test
+zb=vbp/ib; // total impedance referred to stator
+R=zb*pf; // net resistance referred to stator
+X=zb*(sqrt(1-pf^2)); // net reactance referred to stator
+X=X*(f1/f); // net reactance at frequency=45
+Z=R+X*%i; // impedance at frequency=45
+v1=e/sqrt(3); // per phase stator
+is=v1/(Z); // starting current
+ws=(4*%pi*f)/p; // synchronous speed
+T=(3/ws)*abs(is)^2*(R/2);
+printf('Starting torque is %f Nm',T);
-- 
cgit