Related Questions

For motion of spherical particles in a stationary fluid, the drag co-efficient in hindered settling compared to that in free settling is
A More
B Less
C Equal
D More or less, depending on the type of particle
Drag co-efficient in hindered settling is __________ that in free settling.
A Less than
B Equal to
C Not necessarily greater than
D Always greater than
For a particle settling in water at its terminal settling velocity, which of the following is true?
A Buoyancy = weight + drag
B Weight = buoyancy + drag
C Drag = buoyancy + weight
D Drag = weight
__________ are used for the separation of coarse particles from a slurry of fine particles.
A Thickeners
B Classifiers
C Hydrocyclones
D Decanters
Electrostatic separation of minerals from each other is based on their differences in the following property.
A Densities
B Magnetic permeabilities
C Electrical conductivities
D Hardness
Two particles are called to be equal settling, if they are having the same.
A Size
B Specific gravity
C Terminal velocities in the same fluid & in the same field of force
D None of these
In classification, particles are said to be equal settling, if they have the same terminal velocities in the
A Different fluids
B Same fluid
C Same field of force
D Both B and C
In hindered settling, the particles are
A Placed farther from the wall
B Not affected by other particles and the wall
C Near each other
D None of these
Separation of solid particles based on their densities is called
A Sizing
B Sorting
C Clarification
D Dispersion
Solid particles separation based on the difference in their flow velocities through fluids is termed as the
A Clarification
B Classification
C Elutriation
D Sedimentation

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