A 690 KVA, 2660-V, 60 Hz, 0.9 PF lagging, Y-connected,

A 690 KVA, 2660-V, 60 Hz, 0.9 PF lagging, Y-connected, 8- pole synchronous generator has an armature resistance of 0 Ω. The OCC and SCC characteristics are given below in a tabular form. Find the generator's synchronous reactance at rated armature current. Select one: 

a. X = 7.8 Ohms 

b. X = j13.5 Ohms 

c. X = 13.5 Ohms 

d. X = 23.4 Ohms 

e. None Clear my choic