## 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

between 1 and 100
160
less than 1
200

Venturimeter
Orifice plate
pitot tube
rotameter

## Hydraulics & Fluid Mechanics True one-dimensional 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 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

## Hydraulics & Fluid Mechanics The resultant of all normal pressures acts

at e.g. of body
at center of pressure
vertically upwards
at metacentre

0°K
0°C
4°C
20°C

## Hydraulics & Fluid Mechanics The line of action of the buoyant force acts through the centroid of the

submerged body
volume of the fluid vertically above the body
volume of the floating body
displaced volume of the fluid