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
200
less than 1

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Hydraulics & Fluid Mechanics
Non uniform flow occurs when

the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time
velocity, depth, pressure, etc. change from point to point in the fluid flow
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

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