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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The kinematic viscosity of an oil (in stokes) whose specific gravity is 0.95 and viscosity 0.011 poise, is

0.0116 stoke
0.611 stoke
0.116 stoke
0.0611 stoke

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Hydraulics and Fluid Mechanics in ME
A flow is called super-sonic if the

Discharge is difficult to measure
Mach number is between 1 and 6
Velocity of flow is very high
None of these

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Hydraulics and Fluid Mechanics in ME
Unit of surface tension is

Velocity/unit area
It has no units
Both of the above
Energy/unit area

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

Twice the breadth
Half the depth
Half the breadth
Twice the depth

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

Archimedes principle
All of these
law of gravitation
principle of buoyancy

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Hydraulics and Fluid Mechanics in ME
Bulk modulus of a fluid __________ as the pressure increases.

Decreases
Increases
Remain same
None of these

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