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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit of surface tension is

N/m2
N/m3
N-m
N/m

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Hydraulics and Fluid Mechanics in ME
In reaction turbine, draft tube is used

To increase flow rate
To transport water downstream without eddies
To convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section
For safety of turbine

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Hydraulics and Fluid Mechanics in ME
The depth of center of pressure of an immersed surface, inclined at an angle 'θ' with the liquid surface lies at a distance equal to __________ the center of gravity.

IG sinθ/Ax̅ above
IG sin²θ/Ax̅ below
IG sinθ/Ax̅ below
IG sin²θ/Ax̅ above

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Hydraulics and Fluid Mechanics in ME
A nozzle is generally made of

Convergent-divergent shape
Convergent shape
Cylindrical shape
Divergent shape

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Hydraulics and Fluid Mechanics in ME
Liquids transmit pressure equally in all the directions. This is according to

Archimedes principle
Pascal's law
Newton's formula
Boyle's law

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Hydraulics and Fluid Mechanics in ME
A nozzle placed at the end of a water pipe line discharges water at a

Low pressure
High pressure
Low velocity
High velocity

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