9.75 m/sec²
10.2/m sec
9.81 m/sec²
10m/sec²

## Hydraulics & Fluid Mechanics A perfect gas

None of these
is incompressible
has constant viscosity
is of theoretical interest

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

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

## Hydraulics & Fluid Mechanics Steady flow occurs when

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 direction and magnitude of the velocity at all points are identical
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

discharge
head
pressure
velocity

## Hydraulics & Fluid Mechanics If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is

200
less than 1
between 1 and 100
160