 Z_s= 5 ohm
X_s= 4.935585 ohm
 
 At unity power factor   

induced emf= 2137.755833V
regulation= 6.887792 percent
 
 At 0.71 lagging power factor   

induced emf= 2422.283821V
regulation= 21.114191percent
 
 At 0.8 leading power factor   

induced emf= 1822.487197V
regulation=  -8.875640percent
 