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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit discharge through the turbine is

Q/√H
Q/H3/2
Q/H²
Q/H

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Hydraulics and Fluid Mechanics in ME
Practical fluids

are viscous
possess surface tension
possess all the above properties
are compressible

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Hydraulics and Fluid Mechanics in ME
The centre of gravity of the volume of the liquid displaced is called

Centre of buoyancy
Centre of pressure
None of the listed here
Metacentre

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Hydraulics and Fluid Mechanics in ME
A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is

14π R7/2/15Cd × a √(2g)
14π R3/2/15Cd × a √(2g)
14π R1/2/15Cd × a √(2g)
14π R5/2/15Cd × a √(2g)

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Hydraulics and Fluid Mechanics in ME
A turbine pump is basically a centrifugal pump equipped additionally with

Vaned diffusion casing
Adjustable blades
Backward curved blades
Inlet guide blades

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of rectangular section will be maximum, if

Its breadth is thrice the depth
Its depth is twice the breadth
Its depth is thrice the breadth
Its breadth is twice the depth

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