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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For laminar flow in circular pipes, the Darcy’s friction factor f is equal to

32/ Re
16/Re
None of these
64/ Re

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of o floating in a fluid of same specific gravity a will

be fully immersed with top surface at fluid surface
partly immersed
float over fluid
sink to bottom

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Hydraulics and Fluid Mechanics in ME
A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is

6
5
1
7

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Hydraulics and Fluid Mechanics in ME
In a reciprocating pump, air vessels are used to

Reduce acceleration head
Smoothen the flow
Reduce suction head
Increase delivery head

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Hydraulics and Fluid Mechanics in ME
A vessel of 4 m3 contains oil which weighs 30 kN. The specific weight of the oil is

6 kN/m3
7.5 kN/m3
10 kN/m3
4.5 kN/m3

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Hydraulics and Fluid Mechanics in ME
The flow in which the particles of a fluid attain such velocities that varies from point to point in magnitude and direction as well as from instant to instant, is known as

One dimensional flow
Steady flow
Turbulent flow
Uniform flow

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