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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the viscous force is called

Weber's number
Euler's number
Froude's number
Reynold's number

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Hydraulics and Fluid Mechanics in ME
Multistage centrifugal pumps are used to obtain

High head
High head and high discharge
High discharge
Pumping of viscous fluids

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Hydraulics and Fluid Mechanics in ME
The factional resistance of a pipe varies approximately with __________ of the liquid.

Cube of velocity
Pressure
Velocity
Square of velocity

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

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

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Roynolds number is

less than 2000
less than 4000
between 2000 and 4000
more than 4000

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Hydraulics and Fluid Mechanics in ME
Dynamic viscosity of most of the gases with rise in temperature

unpredictable
increases
remains unaffected
decreases

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