The upper surface of a weir over which water flows is known is
(a) crest
(b) nappe
(c) sill
(d) weir top
(e) contracta.
The correct Answer Is
(c) sill
(a) crest
(b) nappe
(c) sill
(d) weir top
(e) contracta.
The correct Answer Is
(c) sill