Hydraulics & Fluid Mechanics
The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is

parabolic distribution across the section
zero at plates and increases linearly to midpoint
zero at the mid plane and varies linearly with distance from mid plane
constant over the cross section

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Hydraulics & Fluid Mechanics
Two dimensional flow occurs when

the direction and magnitude of the velocity at all points are identical
the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
the magnitude and direction of the velocity do not change from point to point in the fluid

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Hydraulics & Fluid Mechanics
Select the correct statement

Local atmospheric pressure is always below standard atmospheric pressure
Local atmospheric pressure depends upon elevation of locality only
A barometer reads the difference be-tween local and standard atmospheric pressure
Standard atmospheric pressure is the mean local atmospheric pressure a* sea level

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