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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than 4
unity
greater than unity
greater than 2

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Hydraulics and Fluid Mechanics in ME
The speed of an imaginary turbine, identical with the given turbine, which will develop a unit power under a unit head, is known as

Specific speed
Unit speed
Normal speed
None of these

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Hydraulics and Fluid Mechanics in ME
The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.

Higher
Lower
None of these
Same

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Hydraulics and Fluid Mechanics in ME
The flow in a pipe is neither laminar nor turbulent when Reynold number is

Between 2000 and 2800
More than 2800
Less than 2000
None of these

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Hydraulics and Fluid Mechanics in ME
Piezometer is used to measure

Difference of pressure between two points
Pressure in pipe, channels etc
Very low pressures
Atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The working of which of the following hydraulic units is based on Pascal's law?

Air lift pump
Hydraulic press
Hydraulic coupling
Jet pump

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