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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 fluid forces considered in the Navier Stokes equation are

gravity, pressure and turbulent
gravity, viscous and turbulent
pressure, viscous and turbulent
gravity, pressure and viscous

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Hydraulics and Fluid Mechanics in ME
The center of gravity of the volume of the liquid displaced by an immersed body is called

metacentre
center of gravity
center of buoyancy
center of pressure

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Hydraulics and Fluid Mechanics in ME
The cavitation in reaction turbines is avoided, to a great extent by

Using stainless steel runner of the turbine
All of these
Providing highly polished blades to the runner
Installing the turbine below the tail race level

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Hydraulics and Fluid Mechanics in ME
Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of

Lower speed of operation
Lower discharge
Necessity of air vessel
High initial and maintenance cost

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Hydraulics and Fluid Mechanics in ME
Centre of pressure compared to e.g. is

above or below depending on area of body
above it
below it
at same point

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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