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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit of surface tension is

N/m
N/m3
N-m
N/m2

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Hydraulics and Fluid Mechanics in ME
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

Weir
Nozzle
Notch
Mouthpiece

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Hydraulics and Fluid Mechanics in ME
The number of buckets on the periphery of a Pelton wheel is given by

(D/2d) + 10
(D/2d) + 5
(D/2d) + 20
(D/2d) + 15

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Hydraulics and Fluid Mechanics in ME
When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is the __________ of the two pressures.

Arithmetic mean
Geometric mean
Sum
Difference

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Hydraulics and Fluid Mechanics in ME
For very great pressures, viscosity of moss gases and liquids

decreases
increases
remains same
shows erratic behaviour

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

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

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