36801. Raw materials are charged in the iron blast furnace using
36802. Carbon black is pulverised in a
36803. The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the
36804. The filtrate flow rate in constant pressure filtration
36805. 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)
36806. Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of
36807. The inlet pressure in a constant rate filtration
36808. Size reduction of moulding powders, waxes, resins & gums are done in a __________ mill.
36809. Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is __________ microns.
36810. __________ centrifuge is the most suitable for separation of non-friable crystals.
36811. For benefication of iron ore, the most commonly used method is
36812. A propeller agitator
36813. In a grinding operation, the limiting particle size is the size of the __________ particle in the sample.
36814. Screen capacity is proportional to (where, S = screen aperture)
36815. 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.
36816. 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 ?
36817. A __________ employs a set of screen across a flow channel for the separation of dirt/rust from a flowing liquid stream.
36818. Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called
36819. Reciprocal of sphericity is termed as the
36820. With increase in the pressure drop across the cake, the specific cake resistance for the compressible sludge
36821. Which one of the engine has longest crank shaft?
36822. Size reduction of ice and gypsum can be accomplished suitably by a __________ crusher.
36823. A filter press is
36824. Xanthates are used in the froth floatation process as a/an
36825. The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is
36826. Limestone is normally crushed in a
36827. Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to __________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance ).
36828. Simple method of increasing the voltage of a generator is
36829. The main differentiation factor between tube mill and ball mill is the
36830. Introduction of slurry in a plate and frame filter press is done through a plate in each frame. The plate of this filter has a __________ surface.
36831. Use of grinding aids results in the
36832. A belt conveyor used for the transportation of materials can
36833. Which of the following is not used as a surface active agent in a flocculation operation?
36834. __________ mill is not a revolving mill.
36835. For the transportation of ultrafine particles, the equipment used is a........conveyor.
36836. During filtration operation, the filtrate encounters the resistance of the
36837. Filtration rate does not depend upon the
36838. Which of the following is a fine crusher?
36839. __________ is a cohesive solid.
36840. The optimum moisture content in solids to be crushed/ground ranges from __________ percent.
36841. 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.
36842. In classification, particles are said to be equal settling, if they have the same terminal velocities in the
36843. Dispersion of a gas through liquid is done by using a
36844. Work index is defined as the
36845. Removal of activated carbon from glycerine is done by
36846. What is the reduction ratio in a fine crushing operation having following feed and product sizes?
36847. Short distance transportation of grain, gravel, sand, ash, asphalt etc. is done by using a __________ conveyor.
36848. Equivalent diameter of a particle is the diameter of the sphere having the same
36849. 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
36850. Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill )
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use
Powered By:Omega Web Solutions