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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
A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

0.5
0.5
0.515
0.4

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Hydraulics and Fluid Mechanics in ME
All the terms of energy in Bernoulli’s equation have dimension of

length
work
mass
energy

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Hydraulics and Fluid Mechanics in ME
The unit power developed by a turbine is (where P = Power developed by the turbine under a head of water (H).

P/ √H
P/ H²
P/ H
P/ H3/2

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Hydraulics and Fluid Mechanics in ME
The discharge over a rectangular notch is

Inversely proportional to H3/2
Directly proportional to H3/2
Inversely proportional to H5/2
Directly proportional to H5/2

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Hydraulics and Fluid Mechanics in ME
Density of water is maximum at

0°C
4°C
100°C
0°K

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