Question

d) A transmission line designed for power transmission at 60 Hz is made with superconducting cables. The two conductors that make the transmission line are separated by 3 m. The size of the wires is not known, but their inductance per unit length is 0.5 μΗ/m. The permittivity and permeability are those of free space and the conductivity of air is 10-7 S/m. Calculate: The attenuation constant of the line. ii) The characteristic impendence of the line.

Answer 1

Conductor. are made up sup Conduit Cables Fial : Two-wrre ltne 2.a = 으.sx to = 1.25-수 千 之q and uuig Le Tee SPata 12 -13 Sec WC 따 ot Xine characteristic Tmfe dana.

Matlab code to calculate alpha and Zo:

MATLAB Driveemfyt.m 2R-0;L 0.5* (10* (-6)); 3 G 8*pi*10* (-8) ;C-222.5253*10*( -13); 4 W-120* pi; 5 g sqrt ( (R+j*W*L)* (G+j*W*C)) 6 z-sqrt( (R+j*W*L)/(G+j*W*C))

Result of MATLAB CODE:

>> emfyt 4.7864e-06 4.9488e-06i 19.6798 +19.0339i