diff options
Diffstat (limited to '2192/CH4/EX4.14/4_14.sce')
-rwxr-xr-x | 2192/CH4/EX4.14/4_14.sce | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/2192/CH4/EX4.14/4_14.sce b/2192/CH4/EX4.14/4_14.sce new file mode 100755 index 000000000..fed2e0373 --- /dev/null +++ b/2192/CH4/EX4.14/4_14.sce @@ -0,0 +1,21 @@ +clc,clear
+printf('Example 4.14\n\n')
+
+P=15*1000 //power supplied
+V=220 //supply voltage
+k=0.6;e=0.9; //radiating efficiency and emissivity
+rho = 1.016*10^-6 //specific resistance
+
+l_by_d2 = %pi*V^2/(4*rho*P) //ratio of l and d^2 (i)
+
+T1=1000+273; T2=600+273; //temperatures of wire and charge
+H=5.72*k*e*(T1^4-T2^4)/100^4 //heat dissipated from surface
+
+//since heat dissipated = electrical power input;
+dl2=( P/(H*%pi) )^2//product of d and l (ii)
+
+//multiplying expression(i) and expression (ii)
+l=(l_by_d2*dl2)^(1/3) //length of wire
+printf('Length of wire = %.2f m\n',l)
+d= sqrt(dl2)/l //diameter of wire
+printf('Diameter of wire = %.2f mm',1000*d)
|