Moore filter is a __________ filter.
mesh screen meansopenings per
__________ is the most commonly used 'filter aid'.
Gravity settling process is not involved in the working of a
Sulphuric acid mist is arrested by using a __________ scrubber.
For a non-spherical particle, the sphericity
Shape factor for a cylinder whose length equals its diameter is
Screen capacity is not a function of
Coal is finally pulverised tomesh size for burning in boilers by a
__________ are used for the separation of coarse particles from a slurry of fine particles.
Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is
Froth floatation is the most suitable for treating
The main size reduction operation in ultrafine grinders is
In washing type plate and frame filter press, the ratio of washing rate to the final filtrate rate is
In case of a hammer crusher, the
Dust laden air can be purified using a
Which of the following is a vacuum filter ?
Pine oil used in froth floatation technique acts as a/an
Crushing efficiency is the ratio of the
Fibrous material is broken by a
__________ is the most suitable for compounding rubber and plastic solids.
Ball mill is used for
In case of a hammer crusher,
Ball mills and tube mills with flint or porcelain balls are used for size reduction of
The resistance offered by the filter used in a bag filter is proportional to (where, c = dust concentration, and s = particle size )
In case of a ball mill,
Short distance transportation of grain, gravel, sand, ash, asphalt etc. is done by using a __________ conveyor.
Rittinger's number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger's number of a material indicates its
Cement clinker is reduced to fine size by a
Equivalent diameter of a particle is the diameter of the sphere having the same
If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is Φs is defined by
Energy consumed for crushing one ton of material ranges from __________ kWh.
Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm)
The crushed material received for separation is called feed or
Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill )
For transporting pasty material, one will use a/an
Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a
Vacuum is applied in __________ zone, in case of a general type continuous rotary drum vacuum filter.
For spheres, volume shape factor is given by
Pick out the wrong statement.
A tube mill compared to a ball mill
Which of the follwoing mechanical conveyors does not come under the division 'scrapers' ?
Which of the following agitators having a large blade area, rotating at slow speed is used for mixing high viscosity liquids ( >centipoise) ?
Trommels separate a mixture of particles depending on their
__________ is defined as the geometric mean of the relative rejections and the relative recoveries of two minerals.
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