Q. A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is

View solution

Q. __________ conveyor is the most suitable for long distance transportation of cold, non-abrasive granular/irregular shape/fine materials.

View solution

Q. The specific cake resistance for compressible sludges is a function of the pressure drop

View solution

Q. Moisture can be removed from lubricating oil using

View solution

Q. Tabling process used for separating two materials of different densities by passing the dilute pulp over a table/deck, which is inclined from the horizontal surface at an angle of about

View solution

Q. Which of the following gives the work required for size reduction of coal to -200 mesh in a ball mill most accurately ?

View solution

Q. Electrical energy consumed by a jaw crusher is not a function of the

View solution

Q. Size reduction mechanism used in Jaw crushers is

View solution

Q. Trommels employ __________ for screening of materials.

View solution

Q. Pick out the wrong statement.

View solution

Q. Addition of filter aid to the slurry before filtration is done to ...... of the cake.

View solution

Q. Which of the following terminology is not used for size reduction of materials to fine sizes or powders?

View solution

Q. A tube mill as compared to a ball mill

View solution

Q. Kick's law assumes that the energy required for size reduction is proportional to the logarithm of the ratio between the initial and the final diameters. The unit of Kick's constant is

View solution

Q. The sphericity of a cylinder of 1 mm diameter and length 3 mm is

View solution

Q. Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of __________ mm.

View solution

Q. What is the selectivity index, if the grade of tailings & concentrate is the same ?

View solution

Q. The most suitable equipment used to devulcanise rubber scrap and to make water dispersion & rubber solution is a

View solution

Q. Traces of solids are removed from, liquid in a

View solution

Q. Out of the following size reduction equipments, the maximum feed size can be accepted by the

View solution