Hydraulics and Fluid Mechanics in ME
The discharge through a channel of trapezoidal section is maximum when

The sloping side is equal to half the width at the top
Width of channel at the top is equal to twice the width at the bottom
The sloping side is equal to the width at the bottom
Depth of channel is equal to the width at the bottom

ANSWER DOWNLOAD EXAMIANS APP

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

ANSWER DOWNLOAD EXAMIANS APP

Hydraulics and Fluid Mechanics in ME
In an inward flow reaction turbine

The water enters the wheel at the outer periphery and then flows towards the center of the wheel
The water enters at the center of the wheel and then flows towards the outer periphery of the wheel
The flow of water is partly radial and partly axial
The water flows parallel to the axis of the wheel

ANSWER DOWNLOAD EXAMIANS APP