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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

air resistance
surface tension forces
viscosity
atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The specific speed (Ns) of a centrifugal pump is given by

(N√Q)/H
(N√Q)/H2/3
(N√Q)/H5/4
(N√Q)/H3/4

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Hydraulics and Fluid Mechanics in ME
The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is

600 kg/m3
400 kg/m3
800 kg/m3
200 kg/m3

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Hydraulics and Fluid Mechanics in ME
The loss of pressure head in case of laminar flow is proportional to

Velocity
(Velocity)4
(Velocity)3
(Velocity)2

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel containing liquid is resolved, the surface of the liquid takes the shape of

None of these
A triangle
A paraboloid
An ellipse

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Hydraulics and Fluid Mechanics in ME
An ideal flow of any fluid must fulfill the following

Continuity equation
Newton’s law of viscosity
Pascal’ law
Newton’s law of motion

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