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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of coefficient of discharge is __________ the value of coefficient of velocity.

None of these
Same as
Less than
More than

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Hydraulics and Fluid Mechanics in ME
If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is

2
1
4
43924

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

stagnation pressure
static pressure
dynamic pressure
velocity at stagnation point

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Hydraulics and Fluid Mechanics in ME
Two pipe systems can be said to be equivalent, when the following quantites are same

friction factor and diameter
length and diameter
flow and length
friction loss and flow

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Hydraulics and Fluid Mechanics in ME
When an internal mouthpiece is running free, the discharge through the mouthpiece is (where a = Area of mouthpiece, and H = Height of liquid above the mouthpiece)

0.855 a. √2gH
√2gH
0.5 a. √2gH
0.707 a. √2gH

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Hydraulics and Fluid Mechanics in ME
The buoyancy depends upon the

Compressibility of the liquid
Viscosity of the liquid
Pressure with which the liquid is displaced
Weight of the liquid displaced

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