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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of solids
relative humidity
specific gravity of liquids
specific gravity of gases

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Hydraulics and Fluid Mechanics in ME
The absolute pressure is equal to

Atmospheric pressure - gauge pressure
Gauge pressure + atmospheric pressure
Gauge pressure - vacuum pressure
Gauge pressure - atmospheric pressure

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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 per unit length is (where w = Specific weight of liquid, and H = Height of liquid)

wH/2
wH2/3
wH2/2
wH

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Hydraulics and Fluid Mechanics in ME
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.

Minus
Divide
Plus
None of these

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Hydraulics and Fluid Mechanics in ME
Which of the following velocity potentials satisfies continuity equation ?

x2 + y2
x2-y2
x2y
cosx

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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

0.3
0.6
0.4
0.83

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