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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
The stress-strain relation of the newtoneon fluid is

hyperbolic
parabolic
inverse type
linear

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Hydraulics and Fluid Mechanics in ME
Dynamic viscosity of most of the liquids with rise in temperature

Remain unaffected
Increases
Unpredictable
Decreases

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Hydraulics and Fluid Mechanics in ME
The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.

Equal to
Less than
More than
None of these

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Hydraulics and Fluid Mechanics in ME
Principle of similitude forms the basis of

comparing similarity between design and actual equipment
hydraulic designs
comparing two identical equipments
designing models so that the result can be converted to prototypes

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

Weber's number
Reynold's number
Froude's number
Euler's number

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