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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The intensity of pressure at any point, in a liquid, is __________ to the depth of liquid from the surface.

Directly proportional
Equal
Inversely proportional
None of these

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Hydraulics and Fluid Mechanics in ME
Ratio of inertia force to surface Jension is known as

Froude number
Reynold’s number
Weber’s number
Mach number

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Hydraulics and Fluid Mechanics in ME
Surge wave in a rectangular channel is an example ofi) steady flowii) unsteady flowiii) uniform flowiv) non-uniform flowThe correct answer is

(i) and (iii)
(ii) and (iv)
(i) and (iv)
(ii) and (iii)

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Hydraulics and Fluid Mechanics in ME
Differential monometer is used to measure

difference of pressure between two points
very low pressure
atmospheric pressure
pressure in pipes, channels etc

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Hydraulics and Fluid Mechanics in ME
A differential manometer is used to measure

Difference of pressures between two points in a pipe
Pressure in Venturimeter
Pressure in pipes and channels
Atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
According to fan laws, for the fans having constant wheel diameters, the power demand varies

Cube of fan speed
Directly as fan speed
Square root of fan speed
Square of fan speed

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