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

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 2078/CH3/EX3.6/Example3_6.sce | 24 ++++++++++++++++++++++++
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 create mode 100755 2078/CH3/EX3.6/Example3_6.sce

(limited to '2078/CH3/EX3.6')

diff --git a/2078/CH3/EX3.6/Example3_6.sce b/2078/CH3/EX3.6/Example3_6.sce
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+++ b/2078/CH3/EX3.6/Example3_6.sce
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+//Exa 3.6
+clc;
+clear;
+close;
+//Given data :
+A=poly(0,'A');//cross section area
+I=poly(0,'I');//Current
+Cc=500+2000*A//Rs/km
+load_factor=0.12;
+i=12;//%(depreciation)
+E_lost_cost=0.05;//Rs/kWh
+R=0.17/A;//ohm/km
+
+Cc_var=2000*A//Rs/km(variable cost)
+P2A=Cc_var*i/100;//Rs/km
+P2=P2A/A;
+R_into_A=R*A;//ohm
+W_into_A_BY_Isqr=R_into_A;//W
+E_loss_into_A_BY_Isqr=W_into_A_BY_Isqr*load_factor/1000*8760;//kWh
+P3BYIsqr=E_lost_cost*E_loss_into_A_BY_Isqr;//Rs
+//P2a=P3BYa;//For most economical cross section
+IBYa=sqrt(coeff((numer(P2))/coeff(numer(P3BYIsqr))));//cm^2
+disp(IBYa,"Most economical current density in A/cm^2 : ");
+//Answer in the textbook is wrong.
-- 
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