diff options
Diffstat (limited to '2078/CH3/EX3.5/Example3_5.sce')
| -rwxr-xr-x | 2078/CH3/EX3.5/Example3_5.sce | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/2078/CH3/EX3.5/Example3_5.sce b/2078/CH3/EX3.5/Example3_5.sce new file mode 100755 index 000000000..ebfb28bb7 --- /dev/null +++ b/2078/CH3/EX3.5/Example3_5.sce @@ -0,0 +1,22 @@ +//Exa 3.5
+clc;
+clear;
+close;
+//Given data :
+a=poly(0,'a');//cross section area
+I=poly(0,'I');//Current
+Cc=500+2000*a//Rs/km
+i=12;//%(interest and depreciation)
+E_lost_cost=5/100;//Rs/kWh
+rho=1.78*10^-8;//ohm-cm
+load_factor=0.12;
+Cc_var=2000*a//Rs/km(variable cost)
+P2a=Cc_var*i/100;//Rs/km
+P2=P2a/a;
+R_into_a=rho*1000/(10^-4);//ohm
+W_into_a=I^2*R_into_a;//W
+E_loss_into_a=W_into_a*load_factor/1000*8760;//kWh
+P3BYIsqr=E_lost_cost*E_loss_into_a/I^2;//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 : ");
|