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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific weight of water in S.I. units is taken as

9.81 kN/m3
9.81 × 10-6 N/mm3
Any one of these
9.81 × 103 N/m3

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Hydraulics and Fluid Mechanics in ME
Pascal-second is the unit of

surface tension
pressure
kinematic viscosity
dynamic viscosity

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Hydraulics and Fluid Mechanics in ME
Metacentre is the point of intersection of

All of these
vertical upward force through e.g. of body and center line of body
buoyant force and the center line of body
mid point between e.g. and center of buoyancy

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Hydraulics and Fluid Mechanics in ME
The overall efficiency for a Pelton wheel lies between

0.85 to 0.90
0.75 to 0.85
0.65 to 0.75
0.50 to 0.65

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Hydraulics and Fluid Mechanics in ME
A weir, generally, used as a spillway of a dam is

Broad crested weir
Submerged weir
Ogee weir
Narrow crested weir

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Hydraulics and Fluid Mechanics in ME
According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.

Equal to
Directly proportional
None of these
Inversely proportional

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