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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The value of bulk modulus of a fluid is required to determine

Froude's number
Reynold's number
Mach number
Euler's number

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

Same as buoyant force
Zero
Negligible
None of these

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

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

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Hydraulics and Fluid Mechanics in ME
Kinematic similarity is said to exist between the model and the prototype, if both of them

Are equal in size and shape
Have identical forces
Are identical in shape, but differ only in size
Have identical velocities

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Hydraulics and Fluid Mechanics in ME
In reaction turbine, draft tube is used

For safety of turbine
To transport water downstream without eddies
To increase flow rate
To convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section

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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

Nozzle
Weir
Mouthpiece
Notch

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