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Fluid Mechanics

Fluid Mechanics
In case of supersonic flow of a fluid through pipeline, the 'Mach number' is

1
< 1
> 1

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Fluid Mechanics
Bernoull's equation does not apply to the functioning of a/an

Venturimeter
None of these
Pitot tube
Orificem

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Fluid Mechanics
For water, when the pressure increases, the viscosity

First decreases, and then increases
Decreases
Also increases
Remains constant

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Fluid Mechanics
With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)

Decreases
Remains constant
Increases exponentially
Increases linearly

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Fluid Mechanics
Unsteady uniform flow is represented by flow through a/an

Long pipe at constant rate
Expanding tube at increasing rate
Long pipe at decreasing rate
Expanding tube at constant rate

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Fluid Mechanics
The length of the tube necessary for the boundary layer to reach the centre of the tube and for fully developed flow to be established is called the __________ length.

Transition
None of these
Prandtl mixing
Equivalent

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