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Hydraulics and Fluid Mechanics in ME

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 + cos φ)/2
(1 - sin φ)/2

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Hydraulics and Fluid Mechanics in ME
When the Mach number is between ___ the flow is called super-sonic flow.

1 and 6
2.5 and 4
4 and 6
1 and 2.5

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Hydraulics and Fluid Mechanics in ME
The loss of head at exit of a pipe is (where v = Velocity of liquid in the pipe)

0.5v²/2g
0.75v²/2g
0.375v²/2g
v²/2g

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Hydraulics and Fluid Mechanics in ME
The property of a liquid which offers resistance to the movement of one layer of liquid over another adjacent layer of liquid, is called

Viscosity
Capillarity
Compressibility
Surface tension

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Hydraulics and Fluid Mechanics in ME
The shear stress-strain graph for a Newtonian fluid is a

Straight line
Parabolic curve
Elliptical
Hyperbolic curve

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Hydraulics and Fluid Mechanics in ME
The discharge over a rectangular notch is

Inversely proportional to H3/2
Directly proportional to H3/2
Directly proportional to H5/2
Inversely proportional to H5/2

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