Q. 56 A 3-phase generator rated at 110 MVA, 11 kV is connected through circuitbreakers to a transformer . The generator is having direct axis sub-transientus reactance
. transient reactance
and synchronous reactance =130%. The generator is operating at no load and rated voltage when a three phase short circuit fault occurs between the breakers and the transformer . Themagnitude of initial symmetrical rms current in the breakers will be
(A) 4.44 kA
(B) 22.20 kA
(C) 30.39 kA
(D) 38.45 kA
Answer:(C)
Explanation:
