Question$)$

A three$-$phase transposed line is composed of one ACSR $1,431,000$ cmil, $47/7$ Bobolink conductor per phase with flat horizontal spacing of $11$ meters as shown in the Fig$\mathrm{.}1.$ The conductors have a diameter of $3\mathrm{.}625$ cm and a GMR of $1\mathrm{.}439$ cm $.$ The line is to be replaced by a three$-$conductor bundle of ACSR $477,000$ cmil, $26/7$ Hawk conductors having the same cross$-$sectional area of aluminum as the single$-$conductor line. The conductors have a diameter of $2\mathrm{.}1793$ cm and a GMR of $0\mathrm{.}8839$ cm $.$ The new line will also have a flat horizontal configuration, but it is to be operated at a higher voltage and therefore the phase spacing is increased to $14$ m as measured from the center of the bundles as shown in Fig. $2.$ The spacing between the conductors in the bundle is $45$ cm $.$ Determine;

a$)$ The percentage change in the inductance.

b$)$ The percentage change in the capacitance.

a

b

c