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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as

Steak line
Potential line
Stream line
Path line

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Hydraulics and Fluid Mechanics in ME
The Thomson's turbine is _________ reaction turbine.

An inward flow
An axial flow
An outward flow
A mixed flow

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Hydraulics and Fluid Mechanics in ME
In an internal mouthpiece, the absolute pressure head at vena contracta is __________ the atmospheric pressure head by an amount equal to height of the liquid above the vena contracta.

None of these
Equal to
More than
Less than

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Hydraulics and Fluid Mechanics in ME
A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be

(2AH₁)/(Cd × a√2g)
(2AH₁3/2)/(Cd × a√2g)
(2A√H₁)/(Cd × a√2g)
(2AH₁²)/(Cd × a√2g)

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Hydraulics and Fluid Mechanics in ME
A fluid having no viscosity is known as

Real fluid
Non-Newtonian fluid
Newtonian fluid
Ideal fluid

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Hydraulics and Fluid Mechanics in ME
In order to avoid cavitation in centrifugal pumps

The suction pressure should be low
The delivery pressure should be high
The delivery pressure should be low
The suction pressure should be high

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