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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A liquid would wet the solid, if adhesion forces as compared to cohesion forces are

equal
more
less at low temperature and more at high temperature
less

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Hydraulics and Fluid Mechanics in ME
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

Mouthpiece
Nozzle
Weir
Notch

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Hydraulics and Fluid Mechanics in ME
The hydraulic gradient line lies over the centre line of the pipe by an amount equal to the

Pressure head - velocity head
Velocity head
Pressure head
Pressure head + velocity head

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Hydraulics and Fluid Mechanics in ME
The horizontal component of buoyant force is

Negligible
None of these
Zero
Same as buoyant force

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Hydraulics and Fluid Mechanics in ME
Kinematic viscosity is equal to

density/dynamic viscosity
dynamic viscosity/density
dynamicviscosity x density
1/dynamicviscosity x density

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Hydraulics and Fluid Mechanics in ME
Specific speed for reaction turbines ranges from

80 to 200
250 to 300
0 to 4.5
10 to 100

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