GATE Electrical Engineering (EE) 2020 Solved Paper

Question : 12 of 65

Marks: +1, -0

A lossless transmission line with

0.2

p.u. reactance per phase uniformly distributed along the length of the line, connecting a generator bus to a load bus, is protected up to

80 \%

of its length by a distance relay placed at the generator bus. The generator terminal voltage is 1 p.u. There is no generation at the load bus. The threshold p.u. current for operation of the distance relay for a solid three phase-to-ground fault on the transmission line is closest to:

$6.25$
$3.61$
$1.00$
$5.00$

Validate

Solution:

I_{f}=\;{V}/{0.8 × \;\text " line "\;}=\;{1}/{0.8 × 0.2}=\;{1}/{0.16}=6.25

Go to Question:

Prev Question

Next Question