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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the diameter of the orifice from the outlet of orifice.

One-half
Equal to
One-third
One-fourth

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Hydraulics and Fluid Mechanics in ME
A fluid whose viscosity does not change with the rate of deformation or shear strain is known as

Newtonian fluid
Real fluid
Non-Newtonian fluid
Ideal fluid

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Hydraulics and Fluid Mechanics in ME
The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at that point, is known as

Steak line
Potential line
Stream line
Path line

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Hydraulics and Fluid Mechanics in ME
The maximum hydraulic efficiency of an impulse turbine is (where φ = Angle of blade tip at outlet)

(1 + cos φ)/2
(1 - sin φ)/2
(1 + sin φ)/2
(1 - cos φ)/2

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Hydraulics and Fluid Mechanics in ME
The power produced by the reaction turbine is ________ to the head of water.

None of these
Inversely proportional
4th power
Directly proportional

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Hydraulics and Fluid Mechanics in ME
The specific speed of a turbine is given by the equation

N√P / H3/2
N√P / H²
N√P / H3
N√P / H5/4

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