Q. A __________ employs a set of screen across a flow channel for the separation of dirt/rust from a flowing liquid stream.

View solution

Q. Removal of activated carbon from glycerine is done by

View solution

Q. Work index is defined as the

View solution

Q. Dispersion of a gas through liquid is done by using a

View solution

Q. In classification, particles are said to be equal settling, if they have the same terminal velocities in the

View solution

Q. The capacity of a gyratory crusher is __________ that of a jaw crusher with the same gape, handling the same feed & for the same product size range.

View solution

Q. For benefication of iron ore, the most commonly used method is

View solution

Q. __________ centrifuge is the most suitable for separation of non-friable crystals.

View solution

Q. Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is __________ microns.

View solution

Q. Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.

View solution

Q. The inlet pressure in a constant rate filtration

View solution

Q. Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of

View solution

Q. Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripherial velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m³ here, V =πN.D where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m)

View solution

Q. The filtrate flow rate in constant pressure filtration

View solution

Q. The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the

View solution

Q. Carbon black is pulverised in a

View solution

Q. Actual operating speed of a ball mill may vary from 65 to 80% of the critical speed. Which of the following duties would require the ball mill to be operated at maximum percentage of critical speed ?

View solution

Q. In coal washeries, three products namely the valuable product (i.e. clean/washed coal), discarded product (i.e. mineral matter) and an additional concentrated product called __________ is produced.

View solution

Q. Screen capacity is proportional to (where, S = screen aperture)

View solution

Q. In a grinding operation, the limiting particle size is the size of the __________ particle in the sample.

View solution