This document contains two MATLAB programs. The first program calculates the optimal cross-sectional area of an electrical conductor by plotting resistance, capacitance, and total cost against varying area. The second program plots fuel cost, heat rate, and incremental cost against changing power plant output to find the minimum incremental cost.

1. Optimal cross section area of conductor
Matlap prog
a=50:100
k1=10^-4;
k2=2*(10^5);
d=0.08;
cr=k1*(10^6)./a;
cf=k2*d*(10^-6).*a;
ctot=cr+cf;
opt=sqrt(k1/(k2*d))
figure(1)
plot(a,cr)
figure(2)
plot(a,cf)
figure(3)
plot(a,ctot)
output.
Plot(a,cr)

2. Plot(a,cf)
Plot(a,ct)
Experiment (3)

3. Incremental fuel cost
Matlap prog.
p=10:100;
f=10^6.*(40+(4.*p)+(0.012.*p.^2));
i=0.12*10^-6;
h=f./p;
c=i.*h;
figure(1)
plot(p,f)
figure(2)
plot(p,h)
figure(3)
plot(p,c)
output
plot (p,F)
Plot (p,h)

4. Plot (p,c)