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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water

51 cm
52 cm
52.2 cm
50 cm

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Hydraulics and Fluid Mechanics in ME
The rise or depression of liquid in a tube due to surface tension will increase in size of tube will

Increase
Remain unaffected
Decrease
May increase or decrease depending on the characteristics of liquid

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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.

None of these
Neutral
Unstable
Stable

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Hydraulics and Fluid Mechanics in ME
The centrifugal pump preferred for a specific speed between 80 to 160 r.p.m. is

High speed with radial flow at outlet
Slow speed with radial flow at outlet
Medium speed with radial flow at outlet
High speed with mixed flow at outlet

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Hydraulics and Fluid Mechanics in ME
A moving fluid mass may be brought to a static equilibrium position, by applying an imaginary inertia force of the same magnitude as that of the accelerating force but in the opposite direction. This statement is called

Pascal’s law
D-Alembert’s principle
None of these
Archimedes’s principle

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Hydraulics and Fluid Mechanics in ME
According to Chezy's formula, the discharge through an open channel is (where A = Area of flow, C = Chezy's constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

AC × √(m × i)
mi × √(A × C)
C × √(m × i)
A × √(m × i)

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