## Hydraulics & Fluid Mechanics The surface tension of mercury at normal temperature compared to that of water is

same
less
more or less depending on size of glass tube
more

## Hydraulics & Fluid Mechanics The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if

the area is inclined
the area is vertical
the area is horizontal
All of these

## Hydraulics & Fluid Mechanics Non uniform flow occurs when

the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
the direction and magnitude of the velocity at all points are identical
velocity, depth, pressure, etc. change from point to point in the fluid flow
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

H5/2
H
H1/2
H3/2

## Hydraulics & Fluid Mechanics For a floating body to be in stable equilibrium, its metacentre should be

above the center of gravity.
above the center of buoyancy
below the center of buoyancy
between e.g. and center of pressure