What is not the way of classifying weir based on their shape of crest?
(a) Sharp crested weir
(b) Broad crested weir
(c) Narrow crested weir
(d) Trapezoidal crested weir
This question was posed to me in my homework.
Question is taken from Classification of Notches and Weirs in portion Orifices, Mouthpieces, Notches and Weirs of Fluid Mechanics