UOPS 4 SEDIMENTATION TEST
WITH SOLUTION
D - If the motion of a particle is impeded by other particles, which will
happen when the particles are near each other even though they are not
actually colliding, the process is
called
a. free settling
b. unhindered settling
c. gravity settling
d. hindered settling
A - The drag coefficient in hindered settling is ___ compared to free settling.
a. greater than
b. less than
c. constant
d. varying
C - The operation by which solids are separated from liquids due to
,difference in their respective densities is
a. screening c. sedimentation
b. adsorption d. absorption
D - The separation of solid particles into several size fractions based upon the
settling velocities in a medium is called
a. settling c. flotation
b. filtration d. classification
B - Device in which a current of air separates particles with different
sedimentation velocities.
a. agitator
b. air elutriator
c. classifier
d. air conveyor
A - The constant velocity with which a body moves relative to the
surrounding fluid when the forces acting on it (gravitational, centrifugal, and
, electrostatic forces) are equal to the friction force acting against the
movement.
a. terminal velocity c. maximum velocity
b. settling velocity d. all of these
B - An apparatus in which particles settle in a liquid by gravitational or
centrifugal force and are removed as a concentrated slurry.
a. classifier c. elutriator
b. thickener d. agitator
C - In a motion of a particle through fluids, forces act on a particle moving
through a fluid. The force which appears whenever there is a relative motion
between the particle and
the fluid is called
a. gravitational force
b. centrifugal force
c. drag force
d. buoyant force
WITH SOLUTION
D - If the motion of a particle is impeded by other particles, which will
happen when the particles are near each other even though they are not
actually colliding, the process is
called
a. free settling
b. unhindered settling
c. gravity settling
d. hindered settling
A - The drag coefficient in hindered settling is ___ compared to free settling.
a. greater than
b. less than
c. constant
d. varying
C - The operation by which solids are separated from liquids due to
,difference in their respective densities is
a. screening c. sedimentation
b. adsorption d. absorption
D - The separation of solid particles into several size fractions based upon the
settling velocities in a medium is called
a. settling c. flotation
b. filtration d. classification
B - Device in which a current of air separates particles with different
sedimentation velocities.
a. agitator
b. air elutriator
c. classifier
d. air conveyor
A - The constant velocity with which a body moves relative to the
surrounding fluid when the forces acting on it (gravitational, centrifugal, and
, electrostatic forces) are equal to the friction force acting against the
movement.
a. terminal velocity c. maximum velocity
b. settling velocity d. all of these
B - An apparatus in which particles settle in a liquid by gravitational or
centrifugal force and are removed as a concentrated slurry.
a. classifier c. elutriator
b. thickener d. agitator
C - In a motion of a particle through fluids, forces act on a particle moving
through a fluid. The force which appears whenever there is a relative motion
between the particle and
the fluid is called
a. gravitational force
b. centrifugal force
c. drag force
d. buoyant force
