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Hydraulics and Fluid Mechanics in ME

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

Path line
Stream line
Steak line
Potential 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 - sin φ)/2
(1 - cos φ)/2
(1 + sin φ)/2
(1 + cos φ)/2

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Hydraulics and Fluid Mechanics in ME
The discharge in an open channel corresponding to critical depth is

None of these
Maximum
Zero
Minimum

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Hydraulics and Fluid Mechanics in ME
Geometric similarity is said to exist between the model and the prototype, if both of them

Have identical velocities
Are equal in size and shape
Have identical forces
Are identical in shape, but differ only in size

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Hydraulics and Fluid Mechanics in ME
Capillary action is due to the

Cohesion of the liquid
Adhesion of the liquid molecules and the molecules on the surface of a solid
All of the listed here
Surface tension

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Hydraulics and Fluid Mechanics in ME
The weight per unit volume of a liquid at a standard temperature and pressure is called

Specific gravity
None of these
Mass density
Specific weight

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