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

---
 2471/CH8/EX8.7/Ex8_7.sce | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100755 2471/CH8/EX8.7/Ex8_7.sce

(limited to '2471/CH8/EX8.7')

diff --git a/2471/CH8/EX8.7/Ex8_7.sce b/2471/CH8/EX8.7/Ex8_7.sce
new file mode 100755
index 000000000..488930879
--- /dev/null
+++ b/2471/CH8/EX8.7/Ex8_7.sce
@@ -0,0 +1,25 @@
+clear ;
+clc;
+// Example 8.7
+printf('Example 8.7\n\n');
+printf('Page No. 235\n\n');
+
+//given
+N = 40;// Number of lamps
+T1 = 15;// Operating time in h per day
+P = 500;// POwer from the lamps in W
+T2 = 300;// Total operating time in days per year
+C = 2.5/10^3;// Electricity cost in p per Wh
+
+An_Cost = N*P*T1*T2*C*10^-2;// In euro
+printf('The Annual Cost is %.0f Euro \n',An_Cost)
+
+//Improvement in light by installing glassfibre skylights
+T3 = 5;//   Extra Time for natural lighting in h per day
+New_An_Cost = N*P*(T1-T3)*T2*C*10^-2;// In euro
+printf('The New Annual Cost is %.0f Euro \n',New_An_Cost)
+
+Save = An_Cost - New_An_Cost;// in euro
+printf('The annual saving for a pay-back period of 2.5 years is %.0f ',Save)
+
+
-- 
cgit