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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The Francis formula for the discharge over Cipoletti weir is

1.84 LH1/2
1.84 LH3/2
1.84 LH
1.84 LH5/2

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Hydraulics and Fluid Mechanics in ME
The speed of sound in a ideal gas varies directly as its

temperature
absolute temperature
modulus of elasticity
density

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Hydraulics and Fluid Mechanics in ME
If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will

rise until its weight equals the buoyant force
None of these
tend to move downward and it may finally sink
float

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Hydraulics and Fluid Mechanics in ME
A channel is said to be of most economical cross-section, if

All of these
It gives maximum discharge for a given cross-sectional area and bed slope
It has minimum wetted perimeter
It involves lesser excavation for the designed amount of discharge

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Hydraulics and Fluid Mechanics in ME
Reaction turbines are used for

High head and low discharge
Low head and high discharge
High head
Low head

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Hydraulics and Fluid Mechanics in ME
The velocity distribution for laminar flow through a circular tube

varies linearly from zero at walls to maximum at centre
None of these
is constant over the cross-section
varies parabolically with maximum at the centre

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