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Hydraulics and Fluid Mechanics in ME

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

Specific speed
Specific gravity
Specific volume
Specific weight

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Hydraulics and Fluid Mechanics in ME
A pitot tube is used to measure the

Total pressure of liquid flowing in a pipe
Pressure difference between two points in a pipe
Discharge through a pipe
Velocity of flow at the required point in a pipe

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Hydraulics and Fluid Mechanics in ME
A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?

4 x (225)3/2 minutes
4 (225)1/3 minutes
4 x V225 minutes
4 minutes

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of o floating in a fluid of same specific gravity a will

sink to bottom
partly immersed
be fully immersed with top surface at fluid surface
float over fluid

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Hydraulics and Fluid Mechanics in ME
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as

Narrow-crested weir
Broad-crested weir
Submerged weir
Ogee weir

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Hydraulics and Fluid Mechanics in ME
In steady flow of a fluid, the total accele ration of any fluid particle

can be zero
is independent of coordinates
is always zero
is never zero

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