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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
Due to each end contraction, the discharge of rectangular sharp crested weir is reduced by

0.05
0.1
0.2
0.15

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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)

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

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Hydraulics and Fluid Mechanics in ME
The upper surface of a weir over which water flows is known is

sill
weir top
crest
nappe

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Hydraulics and Fluid Mechanics in ME
In a reciprocating pump, air vessels are used to

Increase delivery head
Reduce suction head
Reduce acceleration head
Smoothen the flow

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Hydraulics and Fluid Mechanics in ME
The unit of viscosity is

Meters² per sec
Newton-sec per meter
Newton-sec per meter²
kg-sec/meter

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