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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a centrifugal pump, the liquid enters the pump

At the canter
At the bottom
From sides
At the top

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

remains unaffected
increases
unpredictable
decreases

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Hydraulics and Fluid Mechanics in ME
For laminar flow in circular pipes, the Darcy’s friction factor f is equal to

64/ Re
16/Re
None of these
32/ Re

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Hydraulics and Fluid Mechanics in ME
Maximum impulse will be developed in hydraulic ram when

Ram chamber is large
Waste valve closes suddenly
Supply pipe is short
Supply pipe is long

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Hydraulics and Fluid Mechanics in ME
The eddy viscosity for turbulent flow is

a function of temperature only
dependent on the flow
a physical property of the fluid.
independent of the flow

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Hydraulics and Fluid Mechanics in ME
Kinematic viscosity is equal to

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

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