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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to

0.01
0.001
0.1
0.0001

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Hydraulics and Fluid Mechanics in ME
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately

10 mm
5 mm
30 mm
20 mm

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Hydraulics and Fluid Mechanics in ME
Coefficient of velocity of venturimeter

decreases with higher Reynolds number
is independent of Reynolds number
None of these
is equal to the coefficient of discharge of venturimeter

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Hydraulics and Fluid Mechanics in ME
Piezometer is used to measure

Pressure in pipe, channels etc
Difference of pressure between two points
Atmospheric pressure
Very low pressures

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Hydraulics and Fluid Mechanics in ME
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called

None of these
Notch
Weir
Orifice

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

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