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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The stability of a dam is checked for

Tension at the base
Overturning of the wall or dam
All of these
Sliding of the wall or dam

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Hydraulics and Fluid Mechanics in ME
The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm". The pressure at 2.5 m below the oil surface will be

2 metres of water column
4 m of water column
3 metres of water column
3.5 metres of water column

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Hydraulics and Fluid Mechanics in ME
The tendency of a liquid surface to contract is due to the following property

surface tension
viscosity
cohesion
adhesion

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Hydraulics and Fluid Mechanics in ME
Head developed by a centrifugal pump is

None of these
Proportional to diameter and speed of impeller
Proportional to speed of impeller
Proportional to diameter of impeller

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

More than
Equal to
Less than
None of these

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Hydraulics and Fluid Mechanics in ME
Principle of similitude forms the basis of

designing models so that the result can be converted to prototypes
comparing similarity between design and actual equipment
comparing two identical equipments
hydraulic designs

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