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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
0.15 to 0.3
0.4 to 0.5

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the elastic force is called

Froude's number
Mach number
Reynold's number
Weber's number

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Hydraulics and Fluid Mechanics in ME
In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than

surface friction
All of these
frictional force
viscosity

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Hydraulics and Fluid Mechanics in ME
Which of the following is used to measure the discharge ?

pitot tube
venturimeter
hotwire anemometer
current meter

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Hydraulics and Fluid Mechanics in ME
The value of coefficient of discharge is __________ the value of coefficient of velocity.

More than
None of these
Same as
Less than

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Hydraulics and Fluid Mechanics in ME
The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is

Slow speed with radial flow at outlet
High speed with axial flow at outlet
Medium speed with radial flow at outlet
High speed with radial flow at outlet

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