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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Units of surface tension are

both of the above
distance
it has no units
energy/unit area

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Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be

Steep
Horizontal
First rise and then fall
Nearly horizontal

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Hydraulics and Fluid Mechanics in ME
Indicator diagram of a reciprocating pump is a graph between

Flow vs. swept volume
Pressure in cylinder vs. swept volume
Pressure vs. speed
Flow vs. speed

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Reynolds number is

Less than 4000
More than 4000
Between 2000 and 4000
Less than 2000

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Hydraulics and Fluid Mechanics in ME
According to equation of continuity,

w1a1 = w2a2
w1v1 = w2v2
a1/v1 = a2/v2
a1v1 = a2v2

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Hydraulics and Fluid Mechanics in ME
Dimensions of surface tension are

ML°T
ML°T⁻²
ML²T²
ML r²

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