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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The centre of pressure for a vertically immersed surface lies at a distance equal to __________ the centre of gravity.

Ax̅ / IG above
IG / Ax̅ below
IG / Ax̅ above
Ax̅ / IG below

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Hydraulics and Fluid Mechanics in ME
The intensity of pressure at any point, in a liquid, is __________ to the depth of liquid from the surface.

Directly proportional
None of these
Inversely proportional
Equal

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

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

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Hydraulics and Fluid Mechanics in ME
In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)

p/sinα
p/2sinα
2p/sinα
2p/sin (α/2)

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Hydraulics and Fluid Mechanics in ME
Which of the following is an example of laminar flow?

Flow past tiny bodies
Underground flow
All of these
Flow of oil in measuring instruments

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Hydraulics and Fluid Mechanics in ME
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to

21000
2100
2700
10000

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