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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

metacentre
center of buoyancy
center of gravity
center of pressure

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for the fans having constant wheel diameters, the power demand varies

Square root of fan speed
Directly as fan speed
Square of fan speed
Cube of fan speed

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Hydraulics and Fluid Mechanics in ME
For pipes, turbulent flow occurs when Reynolds number is

less than 2000
between 2000 and 4000
more than 4000
less than 4000

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Hydraulics and Fluid Mechanics in ME
The vapour pressure over the concave surface is

less man the vapour pressure over the plane surface
greater than the vapour pressure over the plane surface
equal to the vapour pressure over the plane surface
zero

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Hydraulics and Fluid Mechanics in ME
The specific speed of a turbine is given by the equation

N√P / H3/2
N√P / H²
N√P / H5/4
N√P / H3

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

More than
Less than
Equal to
None of these

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