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GATE Electrical Engineering (EE) 2011 Solved Paper
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© examsnet.com
Question : 63
Total: 65
Two generator units G
1
and G
2
are connected by 15kV line with a bus at the mid-point as shown below
G
1
= 250 MVA, 15 kV, positive sequence reactance X
G1
= 25% on its own base
G
2
= 100 MVA, 15 kV, positive sequence reactance X
G2
= 10% on its own base L
1
and L
2
= 10 km, positive sequence reactance X
L
= 0.225 Ω/km
In the above system, the three – phase fault MVA at the bus 3 is
82.55 MVA
85.11 MVA
170.91 MVA
181.82 MV
Validate
Solution:
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