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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

2H/3
H/2
3H/4
H/3

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Hydraulics and Fluid Mechanics in ME
The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)

waV / g
waV² / g
waV² / 2g
waV / 2g

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Hydraulics and Fluid Mechanics in ME
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to

Twice the breadth
Half the depth
Half the breadth
Twice the depth

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Hydraulics and Fluid Mechanics in ME
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem

All of these
Orifice plate
pitot tube
Venturimeter

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Hydraulics and Fluid Mechanics in ME
A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

0.6
0.83
0.3
0.4

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Hydraulics and Fluid Mechanics in ME
The atmospheric pressure with rise in altitude decreases

first slowly and then steeply
unpredictable
first steeply and then gradually
linearly

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