A synchronous impedance test is taken on a star connected alternator. Under short-circuit conditions, the line current is 18.67 A. The line to line voltage on open circuit test for the same excitation is 240.3 V. The synchronous impedance
1
7.43 Ω
2
12.4 Ω
3
3.93 Ω
4
5.84 Ω