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

---
 1938/CH6/EX6.27/6_27.sce | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100755 1938/CH6/EX6.27/6_27.sce

(limited to '1938/CH6/EX6.27/6_27.sce')

diff --git a/1938/CH6/EX6.27/6_27.sce b/1938/CH6/EX6.27/6_27.sce
new file mode 100755
index 000000000..c3d873593
--- /dev/null
+++ b/1938/CH6/EX6.27/6_27.sce
@@ -0,0 +1,23 @@
+clc,clear
+printf('Example 6.27\n\n')
+
+kW=[800,500,1000,600]
+cosphi=[1,0.9,0.8,0.9]
+tanphi=tan(acos(cosphi))
+kVAR=kW.*tanphi
+
+kW_total=kW(1)+kW(2)+kW(3)+kW(4)
+kVAR_total=kVAR(1)+kVAR(2)+kVAR(3)+-1*kVAR(4) //4th case is leading 
+
+phi_c=atan(kVAR_total/kW_total)  //total power factor angle
+phi_1=acos(0.95)//pf of machine 1
+kW_1=1000 //active component of machine 1
+kVAR_1=kW_1*tan(phi_1) //reactive component of machine 1
+kW_2=kW_total - kW_1 //active component of machine 1
+kVAR_2=kVAR_total-kVAR_1 //reactive component of machine 2
+
+phi_2=atan(kVAR_2/kW_2) 
+pf_2=cos(phi_2) //power factor of machine 2
+
+printf('Output of second alternator= %.0f kW',kW_2)
+printf('\npower factor of machine 2 = %.2f and lagging',pf_2)
-- 
cgit