Question

three individual 3-phase 400kv power systems, each one of which consists of a generator transformer and a radial line having 3 symmetrical fault level of 20 gva for fault at the remote end of lines, are now reinforced by interconnecting the remote end lines by three lines each of reactance j12 so that the fault level at each remote end of the radial lines on ignoring resistance becomes

(a) 10 gva
(b) (20/3) gva
(c) 24 gva
(d) 20 gva​

Answer 1

Answer:

(C) 24 gva

Explanation:

(c) 24 gva

This is the right answer