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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For very great pressures, viscosity of moss gases and liquids

decreases
shows erratic behaviour
increases
remains same

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Hydraulics and Fluid Mechanics in ME
During the opening of a valve in a pipe line, the flow is

Steady
Uniform
Unsteady
Laminar

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Hydraulics and Fluid Mechanics in ME
The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to

1/2 × breadth
1/2 × sloping side
1/4 × (depth + breadth)
1/2 × depth

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Hydraulics and Fluid Mechanics in ME
In steady flow of a fluid, the total accele ration of any fluid particle

is never zero
can be zero
is independent of coordinates
is always zero

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Hydraulics and Fluid Mechanics in ME
The discharge through a siphon spillway is

Cd × a × √(2g) × H3/2
Cd × a × √(2gH)
Cd × a × √(2g) × H2
Cd × a × √(2g) × H5/2

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Hydraulics and Fluid Mechanics in ME
A hydraulic coupling belongs to the category of

Energy transfer machines
Power absorbing machines
Energy generating machines
Power developing machines

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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