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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The flow ratio in case of Francis turbine varies from

1 to 1.5
0.6 to 0.9
0.4 to 0.5
0.15 to 0.3

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Hydraulics and Fluid Mechanics in ME
Casting of a centrifugal pump is designed so as to minimize

Friction loss
Loss of kinetic energy
Static head
Cavitations

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Hydraulics and Fluid Mechanics in ME
The motion of air mass in a tornado is a

free vortex motion
forced vortex motion
forced vortex at center and free vortex outside
free vortex at center and forced vortex outside

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Hydraulics and Fluid Mechanics in ME
Coefficient of velocity of venturimeter

decreases with higher Reynolds number
None of these
is equal to the coefficient of discharge of venturimeter
is independent of Reynolds number

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Hydraulics and Fluid Mechanics in ME
The Fourneyron turbine is _________ reaction turbine.

An outward flow
An axial flow
A mixed flow
An inward flow

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Hydraulics and Fluid Mechanics in ME
When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wave), the portion of pipe length subjected to maximum head is

L/4
L/3
L
L/2

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