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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The number of buckets on the periphery of a Pelton wheel is given by

(D/2d) + 20
(D/2d) + 5
(D/2d) + 10
(D/2d) + 15

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Hydraulics and Fluid Mechanics in ME
Low specific speed of a pump implies it is

Centrifugal pump
Mixed flow pump
Axial flow pump
None of these

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Hydraulics and Fluid Mechanics in ME
The velocity corresponding to Reynold number of 2800, is called

Lower critical velocity
Super-sonic velocity
Higher critical velocity
Sub-sonic velocity

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Hydraulics and Fluid Mechanics in ME
Property of a fluid by which molecules of different kinds of fluids are attracted to each other is called

adhesion
cohesion
viscosity
compressibility

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Hydraulics and Fluid Mechanics in ME
Motion of a liquid in a volute casing of a centrifugal pump is an example of

Spiral vortex flow
Forced spiral vortex flow
Rotational flow
Radial

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Hydraulics and Fluid Mechanics in ME
The depth of center of pressure of an immersed surface, inclined at an angle 'θ' with the liquid surface lies at a distance equal to __________ the center of gravity.

IG sinθ/Ax̅ below
IG sinθ/Ax̅ above
IG sin²θ/Ax̅ above
IG sin²θ/Ax̅ below

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