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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

2H/3
H/2
H/3
3H/4

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Hydraulics and Fluid Mechanics in ME
Specific weight of water in S.I. units is equal to

1000 N/m3
10000 N/m3
9.81 xlO6 N/m3
9.81 xlO3 N/m3

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Hydraulics and Fluid Mechanics in ME
The pressure of fluid due to hammer blow is

Inversely proportional to (density)1/2 of fluid
Directly proportional to (density)1/2 of fluid
Directly proportional to density of fluid
Inversely proportional to density of fluid

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Hydraulics and Fluid Mechanics in ME
The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.

The bodies A and B have equal stability
The body A is more stable than body B
The body B is more stable than body A
The bodies A and B are unstable

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary

As square of density
Inversely as square root of density
Inversely as density
Directly as the air or gas density

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

Archimedes principle
law of gravitation
All of these
principle of buoyancy

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