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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of vertical lift and very little pipe friction, the pump characteristics should be

Nearly horizontal
Steep
First rise and then fall
Horizontal

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Hydraulics and Fluid Mechanics in ME
Pressure intensifier increases the pressure in proportion to

Square of inverse ratio of diameters
Ratio of diameters
Square of ratio of diameters
Inverse ratio of diameters

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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.

Stable
Unstable
None of these
Neutral

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Hydraulics and Fluid Mechanics in ME
The total pressure on an immersed surface inclined at an angle θ with the liquid surface is

wAx
wA
wAx/sinθ
wx

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Hydraulics and Fluid Mechanics in ME
A vessel of 4 m3 contains oil which weighs 30 kN. The specific weight of the oil is

6 kN/m3
4.5 kN/m3
10 kN/m3
7.5 kN/m3

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Hydraulics and Fluid Mechanics in ME
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of

39.2%
68.8%
49.2%
84.8%

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