What is the short circuit current in the power system when a symmetrical fault occurs if 25% reactance of the 2500 kVA base system has a full load current is 20 A corresponding to base kVA?

Correct option is A

 A symmetrical fault is a fault where all phases are affected so that the system remains balanced. A three-phase fault is a symmetrical fault.
 The other three fault types (line to ground, line to line, and two- line to ground) are called unsymmetrical or asymmetrical faults
 Short circuit current is obtained by multiplying the full-load current by 100/%X.
 These are also called balanced faults and are of two types namely:
o Line to line to ground (L-L-L-G).
o Line to line (L-L-L). Only 2-5 percent of system faults are symmetrical faults.