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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The Francis formula for the discharge over Cipoletti weir is

1.84 LH5/2
1.84 LH
1.84 LH1/2
1.84 LH3/2

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Hydraulics and Fluid Mechanics in ME
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

4μvl/wd²
8μvl/wd²
32μvl/wd²
16μvl/wd²

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Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the speed of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Double
Eight times
Four times
Sixteen times

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Hydraulics and Fluid Mechanics in ME
To avoid an interruption in the flow of a syphon, an air vessel is provided

at the outlet
ay nay point between inlet and outlet
at the inlet
at the summit

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Hydraulics and Fluid Mechanics in ME
Liquids transmit pressure equally in all the directions. This is according to

Boyle's law
Newton's formula
Pascal's law
Archimedes principle

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

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