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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The upper surface of a weir over which water flows is known is

crest
nappe
weir top
sill

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Hydraulics and Fluid Mechanics in ME
Delivery head of a centrifugal pump is

Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
Directly proportional to N

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Hydraulics and Fluid Mechanics in ME
Which of the following is dimensionless?

Specific volume
Specific gravity
Specific speed
Specific weight

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Hydraulics and Fluid Mechanics in ME
The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if

The area is vertical
The area is inclined
All of these
The area is horizontal

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Hydraulics and Fluid Mechanics in ME
When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called

Archimedes’s principle
Principle of flotation
Bernoulli’s theorem
Pascal’s law

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the elastic force is called

Froude's number
Weber's number
Mach number
Reynold's number

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