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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of

84.8%
39.2%
49.2%
68.8%

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Hydraulics and Fluid Mechanics in ME
The runaway speed of a hydraulic turbine is the speed

At full load
At which the turbine will run freely without load
At which there will be no damage to the runner
Corresponding to maximum overload permissible

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Hydraulics and Fluid Mechanics in ME
The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, above the sill of the notch)

(2/3) Cd × b × √(2gH)
(2/3) Cd × b × √(2g) × H3/2
(2/3) Cd × b × √(2g) × H
(2/3) Cd × b × √(2g) × H2

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Hydraulics and Fluid Mechanics in ME
The total pressure on an immersed surface inclined at an angle θ with the liquid surface is

wx
wAx
wAx/sinθ
wA

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Hydraulics and Fluid Mechanics in ME
The loss of pressure head in case of laminar flow is proportional to

Velocity
(Velocity)2
(Velocity)4
(Velocity)3

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Hydraulics and Fluid Mechanics in ME
Units of surface tension are

it has no units
distance
both of the above
energy/unit area

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