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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the viscous force is called

Reynold's number
Froude's number
Weber's number
Euler's number

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.

Less than
Equal to
None of these
More than

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Hydraulics and Fluid Mechanics in ME
All the terms of energy in Bernoulli’s equation have dimension of

work
mass
length
energy

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Hydraulics and Fluid Mechanics in ME
The velocity distribution for laminar flow through a circular tube

varies linearly from zero at walls to maximum at centre
varies parabolically with maximum at the centre
is constant over the cross-section
None of these

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

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Hydraulics and Fluid Mechanics in ME
One poise is equal to

100 N-s/m2
10 N-s/m2
1 N-s/m2
0.1 N-s/m2

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