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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For pipes, turbulent flow occurs when Reynolds number is

between 2000 and 4000
more than 4000
less than 2000
less than 4000

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Hydraulics and Fluid Mechanics in ME
If the depth of water in an open channel is greater than the critical depth, the flow is called

Torrential flow
Critical flow
Tranquil flow
Turbulent flow

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Hydraulics and Fluid Mechanics in ME
A fluid of kinematic viscosity 0.4 cm²/sec flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be

less than 1 m/sec
1.5 m/sec
1 m/sec
2 m/sec

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Hydraulics and Fluid Mechanics in ME
The specific weight of sea water is __________ that of pure water.

Less than
More than
None of these
Same as

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Hydraulics and Fluid Mechanics in ME
The unit speed of the turbine runner is

N/H
N/H²
N/H3/2
N/√H

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Hydraulics and Fluid Mechanics in ME
Euler's number is the ratio of __________ force to pressure force.

Gravity
Inertia
None of these
Viscous

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