Fick’s law relates to_________________?
A. Energy consumption
B. Final particle size
C. Feed size
D. None of these
Mechanical Operations
Cartridge filters are termed as ‘edge’ filters, because of the fact that the_________________?
Cartridge filters are termed as ‘edge’ filters, because of the fact that the_________________?
A. Disks have very sharp edge
B. Solids are not deposited at the edge of the disk
C. Bulk of the solids are removed at the periphery of the disks
D. None of these
Moisture can be removed from lubricating oil using_________________?
Moisture can be removed from lubricating oil using_________________?
A. Tubular centrifuge
B. Clarifier
C. Sparkler filter
D. Vacuum leaf filter
Hot, lumpy & abrasive materials are best transported by using a/an ___________ conveyor ?
Hot, lumpy & abrasive materials are best transported by using a/an ___________ conveyor ?
A. Apron
B. Belt
C. Screw
D. Flight
What is the selectivity index, if the grade of tailings & concentrate is the same ?
What is the selectivity index, if the grade of tailings & concentrate is the same ?
A. 0
B. ∞
C. 1
D. 0.5
The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond’s law, Rittinger’s law and Kick’s law) depend upon the_________________?
The constants (Kb, Kr and Kk) used in the laws of crushing (i.e., Bond’s law, Rittinger’s law and Kick’s law) depend upon the_________________?
A. Feed material
B. Type of crushing machine
C. Both A. & B.
D. Neither A. nor B.
______________ mean diameter of particles is given by Σ (xi/Dpi ⃗)?
______________ mean diameter of particles is given by Σ (xi/Dpi ⃗)?
A. Mass
B. Volume
C. Arithmetic
D. Volume surface
Horsepower required for a roll crusher is directly proportional to its__________________?
Horsepower required for a roll crusher is directly proportional to its__________________?
A. Reduction ratio
B. Capacity
C. Both A. & B.
D. Neither A. nor B.
Weber number is significant and is concerned with the_________________?
Weber number is significant and is concerned with the_________________?
A. Solid-liquid mixing
B. Liquid-liquid mixing
C. Dispersion of liquid in liquid
D. Suspension of solid in liquid
The unit of specific cake resistance is______________________?
The unit of specific cake resistance is______________________?
A. gm/cm2
B. cm/gm
C. cm/gm2
D. gm/gm