Fluid Mechanics
Two dimensional stream function

None of these
Is constant along an equipotential surface
Is constant along a stream line
Relates velocity and pressure

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Fluid Mechanics
Vane anemometer

Is a variable head meter
Rotates an element at a speed determined by the velocity of the fluid in which the meter is immersed
None of these
Is an area meter

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Fluid Mechanics
The Prandtl mixing length is

Useful for computing laminar flow problems
Independent of the shear stress
Zero at the pipe wall and is a universal constant
Independent of radial distance from the pipe axis

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