Standard USBR stilling basin-II is useful for energy dissipation at the bottom of the overflow structure, if the approaching Froude number is ________________

Standard USBR stilling basin-II is useful for energy dissipation at t

1.	Standard USBR stilling basin-II is useful for energy dissipation at the bottom of the overflow structure, if the approaching Froude number is ________________
A.	less than 4.5
B.	more than 4.5
C.	less than 2.5
D.	more than 2.5
Answer» C. less than 2.5