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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2000 is called

Super-sonic velocity
Higher critical velocity
Sub-sonic velocity
Lower critical velocity

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Hydraulics and Fluid Mechanics in ME
The speed of sound in a ideal gas varies directly as its

modulus of elasticity
absolute temperature
temperature
density

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Hydraulics and Fluid Mechanics in ME
A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at vater surface. The hydrostatic force on square surface is

27,000 kg
13,500 kg
18,000 kg
9,000 kg

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Hydraulics and Fluid Mechanics in ME
The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.

None of these
Equal to
Less than
More than

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Hydraulics and Fluid Mechanics in ME
The discharge over a triangular notch is

Inversely proportional to H3/2
Directly proportional to H5/2
Directly proportional to H3/2
Inversely proportional to H5/2

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Hydraulics and Fluid Mechanics in ME
In a reciprocating pump, air vessels are used to

Smoothen the flow
Increase delivery head
Reduce suction head
Reduce acceleration head

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