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

---
 1994/CH7/EX7.21/Example7_21.sce | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100755 1994/CH7/EX7.21/Example7_21.sce

(limited to '1994/CH7/EX7.21/Example7_21.sce')

diff --git a/1994/CH7/EX7.21/Example7_21.sce b/1994/CH7/EX7.21/Example7_21.sce
new file mode 100755
index 000000000..807b9b791
--- /dev/null
+++ b/1994/CH7/EX7.21/Example7_21.sce
@@ -0,0 +1,16 @@
+//Chapter-7,Example7_21,pg 7-65
+K=1800
+V=230
+I=10
+Pf=1//half load
+Ihl=I/2//half load current
+t=138
+Et=V*Ihl*Pf*t
+Et=Et/(3600*10^3)
+N=80//no. of revolutions
+Er=N/K//in kWh
+err=(Er-Et)/Et
+err=err*100
+printf("percentage error\n")
+printf("err=%.2f\n",err)
+printf("positive sign shows that meter is fast and Er>Et")
-- 
cgit