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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

Pelton wheel
Kaplan turbine
None of these
Francis turbine

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Hydraulics and Fluid Mechanics in ME
Units of surface tension are

it has no units
both of the above
energy/unit area
distance

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Hydraulics and Fluid Mechanics in ME
The working of which of the following hydraulic units is based on Pascal's law?

Air lift pump
Jet pump
Hydraulic press
Hydraulic coupling

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Hydraulics and Fluid Mechanics in ME
The impeller of a centrifugal pump may have

Volute casing
Any one of these
Vortex casing
Volute casing with guide blades

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Hydraulics and Fluid Mechanics in ME
Reynold's number is the ratio of the inertia force to the

Gravity force
Viscous force
Elastic force
Surface tension force

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Hydraulics and Fluid Mechanics in ME
The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

0.81 times
0.67 times
0.95 times
0.34 times

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