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

---
 2276/CH10/EX10.9/chapter10_ex9.sce | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100755 2276/CH10/EX10.9/chapter10_ex9.sce

(limited to '2276/CH10/EX10.9')

diff --git a/2276/CH10/EX10.9/chapter10_ex9.sce b/2276/CH10/EX10.9/chapter10_ex9.sce
new file mode 100755
index 000000000..06128ade8
--- /dev/null
+++ b/2276/CH10/EX10.9/chapter10_ex9.sce
@@ -0,0 +1,26 @@
+clc
+clear
+
+//input
+p=6;//number of poles
+f=50;//frequency in hertz
+n=3;//number of phases
+t=160;//total torque in newton meter
+fs=120;//slip frequency in cycles/min
+tf=12;//torque lost in friction
+sl=750;//stator losses in watts
+
+//calculations
+s=fs/(60*f);//slip in per unit
+w=(2*%pi*f)/n;//speed of motor in rad/sec
+wr=w*(1-s);//rotor speed in rad/sec
+rinp=t*w;//rotor input in watts
+rc=s*rinp;//rotor copper losses in watts
+sinp=rinp+sl;//stator input in watts
+Sinp=sinp/1000;//stator input in kilowatts
+tout=t-tf;//output torque in newton meter
+pout=tout*wr;//power output in watts
+eff=pout/sinp;//efficiency in per unit
+
+//output
+mprintf('the rotor loss is %3.0fW, the input to the motor is %3.2f kW and the motor efficiency is %3.2f p.u.',rc,Sinp,eff)
-- 
cgit