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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following pump is generally used to pump highly viscous fluid?

Air lift pump
Screw pump
Reciprocating pump
Centrifugal pump

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Hydraulics and Fluid Mechanics in ME
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea

rotameter
pitot tube
Venturimeter
hot wire anemometer

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will

Be fully immersed with top surface at fluid surface
Partly immersed
Float over fluid
Sink to bottom

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Hydraulics and Fluid Mechanics in ME
Bulk modulus of a fluid __________ as the pressure increases.

Decreases
Remain same
Increases
None of these

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Hydraulics and Fluid Mechanics in ME
The variation in the volume of a liquid with the variation of pressure is called its

Surface tension
Viscosity
Capillarity
Compressibility

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Hydraulics and Fluid Mechanics in ME
A flow is called hyper-sonic, if the Mach number is

Between 1 and 6
Unity
None of these
Less than unity

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