1 : 2.5
1 : 5
1:50
1 :25

50 M/SEC
33 M/SEC
22.5 M/SEC
40 M/SEC

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

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

0°C
20°C
0°K
4°C

## Hydraulics & Fluid Mechanics The normal stress is same in all directions at a point in a fluid

When there is no motion of one fluid layer relative to an adjacent layer
only when the fluid is frictionless
irrespective of the motion of one fluid layer relative to an adjacent layer
only when the fluid is incompressible and has zero viscosity

## Hydraulics & Fluid Mechanics Steady flow occurs when

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
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