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Hydraulics and Fluid Mechanics in ME

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

Less than
None of these
Same as
More than

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Hydraulics and Fluid Mechanics in ME
A balloon lifting in air follows the following principle

principle of buoyancy
All of these
Archimedes principle
law of gravitation

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Hydraulics and Fluid Mechanics in ME
The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to

0.1
0.001
0.0001
0.01

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Hydraulics and Fluid Mechanics in ME
One stoke is equal to

10-4 m2/s
10-3 m2/s
10-2 m2/s
10-6 m2/s

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Hydraulics and Fluid Mechanics in ME
When the Venturimeter is inclined, then for a given flow it will show __________ reading.

More
Less
None of these
Same

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Hydraulics and Fluid Mechanics in ME
The water in a jet propelled boat is drawn through the openings facing the direction of motion of the boat. The efficiency of propulsion is given by

V/(vr + v)
2V/(vr - v)
2V/(vr + v)
V/(vr - v)

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