A synchronous motor, connected to an infinite bus, is working at a leading p.f. Its excitation e.m.f Ef and alternator terminal voltage Vt are related as
1
Ef > Vt and Ef leads Vt
2
Ef < Vt and Ef lags Vt
3
Ef > Vt and Ef lags Vt
4
Ef < Vt and Ef leads Vt
5
Question Not Attempted