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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to

21000
10000
2700
2100

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

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

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Hydraulics and Fluid Mechanics in ME
The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ρ) and rotating at (ω) rad/s is

2ρ ω2 r2
ρ ω2 r2/4
ρ ω2 r2
ρ ω2 r2/2

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Hydraulics and Fluid Mechanics in ME
The point at which the resultant pressure on an immersed surface acts, is known as

Centre of pressure
Centre of immersed surface
Centre of depth
Centre of gravity

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of o floating in a fluid of same specific gravity a will

float over fluid
partly immersed
sink to bottom
be fully immersed with top surface at fluid surface

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Hydraulics and Fluid Mechanics in ME
The angle of taper on draft tube is

Greater than 15°
Greater than 5°
Less than 8°
Greater than 8°

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