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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
According to Bazin's formula, the discharge over a rectangular weir is mL2g x H3/2 where m is equal to

0.405 + (H/0.003)
0.003 + (0.405/H)
0.405 + (0.003/H)
0.003 + (H/0.405)

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Hydraulics and Fluid Mechanics in ME
Barometer is used to measure

Very low pressure
Pressure in pipes, channels etc.
Difference of pressure between two points
Atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
A fluid which obeys the Newton's law of viscosity is termed as

Newtonian fluid
Real fluid
Ideal fluid
Non-Newtonian fluid

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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)

None of the listed here
K/ρ
ρ/K
K.ρ

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

Specific speed
Specific volume
Specific gravity
Specific weight

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Hydraulics and Fluid Mechanics in ME
If V1 and V2 are the velocities of water at inlet and outlet of the draft tube respectively, then the efficiency of a draft tube is

(V­1² - V2²) / V1²
V1 / (V1 - V2)
(V­1 - V2) / V1
V1² / (V1² - V2²)

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