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A 50 Hz alternator is rated 500 MVA, 20 kV, with Xd = 1.0 per unit and X"d = 0.2 per unit. It supplies a purely resistive load of 400 MW at 20 kV. The load is connected directly across the generator terminals when a symmetrical fault occurs at the load terminals. The initiai rms current in the generator in per unit is | |
A. | 7.22 [Wrong Answer] |
B. | 6.4 [Wrong Answer] |
C. | 3.22 [Correct Answer] |
D. | 2.2 [Wrong Answer] |