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Hydraulics and Fluid Mechanics in ME

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

less than 4000
between 2000 and 4000
more than 4000
less than 2000

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Hydraulics and Fluid Mechanics in ME
The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will

decrease
may increase or decrease depending on the characteristics of liquid
increase
remain unaffected

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Hydraulics and Fluid Mechanics in ME
Falling drops of water become spheres due to the property of

surface tension
cohesion
viscosity
adhesion

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Hydraulics and Fluid Mechanics in ME
The units of kinematic viscosity are

newton-sec per meter
metres² per sec
newton-sec per meter
kg sec/meter

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is preferred for flood control and irrigation applications?

Reciprocating pump
Axial flow pump
Mixed flow pump
Centrifugal pump

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Hydraulics and Fluid Mechanics in ME
Differential monometer is used to measure

pressure in pipes, channels etc
difference of pressure between two points
very low pressure
atmospheric pressure

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