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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
An air vessel is provided at the summit in a siphon to

Increase discharge
Avoid interruption in the flow
Maintain pressure difference
Increase velocity

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Hydraulics and Fluid Mechanics in ME
If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

H = Hg/hf
H = Hg - hf
H = Hg + hf
H = Hg × hf

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Hydraulics and Fluid Mechanics in ME
The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)

K/ρ
K.ρ
None of the listed here
ρ/K

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Hydraulics and Fluid Mechanics in ME
According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

A × √(m × i)
AC × √(m × i)
C × √(m × i)
mi × √(A × C)

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Hydraulics and Fluid Mechanics in ME
Dynamic viscosity of most of the gases with rise in temperature

unpredictable
increases
remains unaffected
decreases

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Hydraulics and Fluid Mechanics in ME
Which of the following is dimensionless?

Specific speed
Specific gravity
Specific volume
Specific weight

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