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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A structure used to dam up a stream or river over which the water flows is called

Dam
Notch
Orifice
Weir

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Hydraulics and Fluid Mechanics in ME
The undershot water wheels are those in which

The wheel runs entirely by the weight of water
None of these
The wheel runs entirely by the impulse of water
The wheel runs partly by the weight of water and partly by the impulse of water

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Hydraulics and Fluid Mechanics in ME
An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 which the free surface of liquid makes with the horizontal is such that (where a = Horizontal acceleration of the tank, and g = Acceleration due to gravity)

tanθ = a/g
tanθ = a/2g
tanθ = a2/2g
tanθ = 2 a/g

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Hydraulics and Fluid Mechanics in ME
High specific speed of a pump implies it is

Any one of the above
Mixed flow pump
Axial flow pump
Centrifugal pump

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Hydraulics and Fluid Mechanics in ME
Reynold's number is the ratio of inertia force to

Elastic force
Pressure force
Gravity force
Viscous force

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Hydraulics and Fluid Mechanics in ME
The divergent portion of a Venturimeter is made longer than convergent portion in order to

None of these
Avoid the tendency of breaking away the stream of liquid
To minimize frictional losses
Both (A) and (B)

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