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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Reynolds number is

Between 2000 and 4000
Less than 4000
More than 4000
Less than 2000

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece depends upon

Velocity of liquid
Length of mouthpiece
Area of mouthpiece
Pressure of liquid

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Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

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

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Hydraulics and Fluid Mechanics in ME
The losses are more in

laminar flow
critical flow
transition flow
turbulent flow

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Hydraulics and Fluid Mechanics in ME
Euler's equation in the differential form for the motion of liquids is given by

ρ.dp - g.dz + v.dv = 0
dp/ρ - g.dz + v.dv = 0
ρ.dp + g.dz + v.dv = 0
dp/ρ + g.dz + v.dv = 0

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Hydraulics and Fluid Mechanics in ME
Which of the following manometer has highest sensitivity

inclined U-tube
U-tube with mercury
U-tube with water
micro-manometer with water

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