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Hydraulics and Fluid Mechanics in ME

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

unity
greater than unity
greater than 4
greater than 2

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Hydraulics and Fluid Mechanics in ME
To avoid an interruption in the flow of a syphon, an air vessel is provided

ay nay point between inlet and outlet
at the outlet
at the inlet
at the summit

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Hydraulics and Fluid Mechanics in ME
Water is a __________ fluid.

Real
Newtonian
Non-Newtonian
Ideal

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Hydraulics and Fluid Mechanics in ME
The Francis formula for the discharge over Cipoletti weir is

1.84 LH5/2
1.84 LH
1.84 LH3/2
1.84 LH1/2

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant pressure, the speed capacity and power vary

Directly as the air or gas density
As square of density
Inversely as square root of density
Inversely as density

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Hydraulics and Fluid Mechanics in ME
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

2V/(vr - v)
V/(vr - v)
2V/(vr + v)
V/(vr + v)

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