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Fluid Mechanics

Fluid Mechanics
The equivalent diameter for flow through a rectangular duct of width B and height H is

4HB/(H + B)
HB/(H + B)
2HB/(H + B)
HB/2(H + B)

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Fluid Mechanics
The __________ pressure is measured by a static tube.

Static
Total
None of these
Dynamic

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Fluid Mechanics
Unsteady uniform flow is represented by flow through a/an

Long pipe at constant rate
Expanding tube at constant rate
Long pipe at decreasing rate
Expanding tube at increasing rate

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Fluid Mechanics
A venturimeter can not be used for the direct measurement of

All of these
Datum difference in the stretch of pipeflow
Pressure difference in the flow throughpipeline
Friction loss in pipe flow

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Fluid Mechanics
While starting an axial flow pump, its delivery valve should be kept

None of these
Closed
Open
Either open or closed

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Fluid Mechanics
Pressure drag does not depend upon the

Length of the body in flow direction
Roughness of surface of the body
All of these
Pressure of main flow only

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