Hydraulics and Fluid Mechanics in ME
The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = Height of water due to velocity of approach)

(2/3) Cd × L.√2g [H12 - Ha2]
(2/3) Cd × L. √2g [H15/2 - Ha5/2]
(2/3) Cd × L. √2g [H13/2 - Ha3/2]
(2/3) Cd × L.√2g [H1 - Ha]

ANSWER DOWNLOAD EXAMIANS APP

Hydraulics and Fluid Mechanics in ME
Buoyant force is

Equal to the volume of liquid displaced
The resultant force acting on a floating body
The force necessary to maintain equilibrium of a submerged body
The resultant force on a body due to the fluid surrounding it

ANSWER DOWNLOAD EXAMIANS APP