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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Liquids transmit pressure equally in all the directions. This is according to

Boyle's law
Newton's formula
Pascal's law
Archimedes principle

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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 above
IG / Ax̅ below
Ax̅ / IG below

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Hydraulics and Fluid Mechanics in ME
According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

(2/3) × Cd (L - 0.1nH) × √(2g) × H3/2
(2/3) × Cd (L - nH) × √(2gh)
(2/3) × Cd (L - nH) × √(2g) × H²
(2/3) × Cd (L - nH) × √(2g) × H5/2

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Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

air resistance
surface tension forces
viscosity
atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
Multistage centrifugal pumps are used to obtain

High head
Pumping of viscous fluids
High head and high discharge
High discharge

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Hydraulics and Fluid Mechanics in ME
The discharge over a rectangular notch is

Directly proportional to H5/2
Directly proportional to H3/2
Inversely proportional to H3/2
Inversely proportional to H5/2

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