4.0 M
4.6 M
4.8 M
4.2 M

## Hydraulics & Fluid Mechanics A fluid is said to be ideal, if it is

inviscous
inviscous and compressible
inviscous and incompressible
incompressible

## Hydraulics & Fluid Mechanics True one-dimensional flow occurs when

the direction and magnitude of the veiocity 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 magnitude and direction of the velocity do not change from point to point in the fluid
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

## Hydraulics & Fluid Mechanics Separation of flow occurs when

the pressure intensity reaches a minimum
the boundary layer comes to rest
the cross-section of a channel is reduced
All of these

## Hydraulics & Fluid Mechanics At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

maximum
could be any value
minimum
negative value

20°C
0°C
0°K
4°C