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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The flow in a pipe is neither laminar nor turbulent when Reynold number is

Less than 2000
More than 2800
None of these
Between 2000 and 2800

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Hydraulics and Fluid Mechanics in ME
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

w/h
wh
h
h/w

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Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

Unstable
Neutral
Stable
None of these

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Hydraulics and Fluid Mechanics in ME
Resultant pressure of the liquid in the case of an immersed body acts through

Metacentre
Centre of gravity
Centre of buoyancy
Centre of pressure

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Hydraulics and Fluid Mechanics in ME
The centre of gravity of the volume of the liquid displaced is called

Centre of pressure
Centre of buoyancy
Metacentre
None of the listed here

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

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

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