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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
During the opening of a valve in a pipe line, the flow is

Unsteady
Steady
Laminar
Uniform

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Hydraulics and Fluid Mechanics in ME
The total pressure on a horizontally immersed surface is (where w = Specific weight of the liquid, A = Area of the immersed surface, and x = Depth of the centre of gravity of the immersed surface from the liquid surface)

wA
wx
wA/x
wAx

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Hydraulics and Fluid Mechanics in ME
Stream lines and path lines always coincide in case of

laminar flow
steady flow
turbulent flow
uniform flow

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Hydraulics and Fluid Mechanics in ME
The discharge of a depressed nappe is 6 to 7 percent __________ that of a free nappe.

Less than
Equal to
None of these
More than

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Hydraulics and Fluid Mechanics in ME
The critical depth meter is used to measure

Hydraulic jump
Depth of channel
Velocity of flow in an open channel
Depth of flow in an open channel

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Hydraulics and Fluid Mechanics in ME
For starting an axial flow pump, its delivery valve should be

Could be either open or closed
Depends on starting condition and flow desired
Open
Closed

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