example 5.13   

output power=1200
V per phase= 1905V
Synchronous impedance,Zs=3.175426 ohm
 
 (a)for 0.8 lagging power facor   
induced emf,E=2398.732590 V
regulation=25.900810 percent

 
 (b)For leading power factor load   
induced emf,E= 1647.716860 V
regulation=-13.517293 percent