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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Hydrometer is used to determine

specific gravity of liquids
specific gravity of gases
specific gravity of solids
relative humidity

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel, containing some liquid, is rotated about its vertical axis, the liquid surface is depressed down at the axis of its rotation and rises up near the walls of the vessel on all sides. This type of flow is known as

Uniform flow
Steady flow
Turbulent flow
Vortex flow

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Hydraulics and Fluid Mechanics in ME
The loss of pressure head in case of laminar flow is proportional to

(Velocity)3
(Velocity)4
(Velocity)2
Velocity

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

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

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Hydraulics and Fluid Mechanics in ME
When the Mach number is between ___ the flow is called super-sonic flow.

1 and 6
1 and 2.5
4 and 6
2.5 and 4

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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

First rise and then fall
Nearly horizontal
Steep
Horizontal

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