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

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Hydraulics and Fluid Mechanics in ME
Pressure intensifier increases the pressure in proportion to

Square of ratio of diameters
Square of inverse ratio of diameters
Ratio of diameters
Inverse ratio of diameters

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Hydraulics and Fluid Mechanics in ME
Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between

Lift and drag
Lift and tangential force
Lift and resultant force
Drag and resultant force

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of o floating in a fluid of same specific gravity a will

sink to bottom
partly immersed
float over fluid
be fully immersed with top surface at fluid surface

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Hydraulics and Fluid Mechanics in ME
Which of the following pump is preferred for flood control and irrigation applications?

Centrifugal pump
Axial flow pump
Mixed flow pump
Reciprocating pump

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Hydraulics and Fluid Mechanics in ME
A flow is called sub-sonic, if the Mach number is

More than 6
Between 1 and 6
Less than unity
Unity

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