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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water

50 cm
52 cm
52.2 cm
51 cm

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Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

dQ/Q = 5/2 × (dH/H)
dQ/Q = 2 × (dH/H)
dQ/Q = 3/2 × (dH/H)
dQ/Q = 3 × (dH/H)

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Hydraulics and Fluid Mechanics in ME
General energy equation holds for

laminar flow
steady flow
non-uniform flow
turbulent flow

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Hydraulics and Fluid Mechanics in ME
Which place in hydraulic turbine is most susceptible for cavitations?

Guide blade
Inlet of draft rube
Penstock
Blade inlet

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will

Sink to bottom
Be fully immersed with top surface at fluid surface
Partly immersed
Float over fluid

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Hydraulics and Fluid Mechanics in ME
Bulk modulus of a fluid is the ratio of

Shear stress to shear strain
Increase in pressure to the volumetric strain
Increase in volume to the viscosity of fluid
Critical velocity to the viscosity of fluid

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