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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The speed of a pressure wave through a pipe depends upon

the original head
the viscosity of fluid
the length of pipe
the bulk modulus for the fluid

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Hydraulics and Fluid Mechanics in ME
Which of the following has highest coefficient of discharge ?

sharp edged orifice
venturimeter
CipoUetti weir
Borda’s mouthpiece running full

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Hydraulics and Fluid Mechanics in ME
In an internal mouthpiece, if the jet after contraction does not touch the sides of the mouthpiece, then the mouthpiece is said to be

Running free
Partially running full
Partially running free
Running full

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Hydraulics and Fluid Mechanics in ME
The equation of continuity holds good when the flow

is steady
All of these
is one dimensional
velocity is uniform at all the cross sec-tions

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Hydraulics and Fluid Mechanics in ME
The most economical section of a rectangular channel is one which has hydraulic mean depth or hydraulic radius equal to

Half the breadth
Twice the breadth
Half the depth
Twice the depth

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Hydraulics and Fluid Mechanics in ME
A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is

20 kN
15 kN
5kN
lOkN

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