Question: A single-phase overhead transmission line consists of two solid aluminum conductors having a radius of (3 mathrm{~cm}) with a spacing (3.5 mathrm{~m}) between centers. (a)

A single-phase overhead transmission line consists of two solid aluminum conductors having a radius of $3 \mathrm{~cm}$ with a spacing $3.5 \mathrm{~m}$ between centers.

(a) Determine the total line inductance in $\mathrm{mH} / \mathrm{m}$.

(b) Given the operating frequency to be $60 \mathrm{~Hz}$, find the total inductive reactance of the line in $\Omega / \mathrm{km}$ and in $\Omega / \mathrm{mi}$.

(c) If the spacing is doubled to $7 \mathrm{~m}$, how does the reactance change?

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