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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Poise is the unit of

capillarity
surface tension
viscosity
shear stress in fluids

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Hydraulics and Fluid Mechanics in ME
The gross or total head of the turbine is the ___________ of the water levels at the head race and tail race.

Sum
None of these
Difference
Product

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

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

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Hydraulics and Fluid Mechanics in ME
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

wAx
wA
wA/x
wx

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than unity
unity
greater than 4
greater than 2

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Hydraulics and Fluid Mechanics in ME
In case of an airfoil, the separation of flow occurs

at the extreme rear of body
midway between rear and front of body
any where between rear and front of body depending upon Reynolds number
at the extreme front of body

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