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 [H15/2 - Ha5/2]
(2/3) Cd × L.√2g [H12 - Ha2]
(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
Mach number is significant in

full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc
supersonics, as with projectiles and jet propulsion
all of fhe above
simultaneous motion through two fluids where there is a surface of dis-continuity, gravity force, and wave making effects, as with ship’s hulls

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Hydraulics and Fluid Mechanics in ME