Numerical - Computation of inductance per phase / km for given schematic of 3 phase line

Q.  The three phase line consists of three conductors each of diameter 21 mm. The spacing is shown in fig. Find the inductance per phase / km.

Three phase line with three conductors
- Published on 24 Nov 15

a. 8.2 * 10-4 H / km
b. 12.22 * 10-4 H / km
c. 5.6 * 10-4 H / km
d. None of these

ANSWER: 12.22 * 10-4 H / km

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