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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of gases
specific gravity of solids
relative humidity
specific gravity of liquids

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Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine with increase in unit speed

Remain unaffected
First increases and then decreases
Decreases
Increases

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Hydraulics and Fluid Mechanics in ME
General energy equation holds for

steady flow
non-uniform flow
laminar flow
turbulent flow

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Hydraulics and Fluid Mechanics in ME
The critical depth for a channel is given by (where q = Unit discharge (discharge per unit width) through the channel)

(q/g)1/2
(q²/g)1/3
(q⁴/g)1/5
(q³/g)1/4

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Hydraulics and Fluid Mechanics in ME
Two pipes of same length and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of same length is

greater than 2d
less than d
between d and 1.5 d
between 1.5 d and 2d

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Hydraulics and Fluid Mechanics in ME
Casting of a centrifugal pump is designed so as to minimize

Cavitations
Static head
Loss of kinetic energy
Friction loss

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