200 mesh sieve size corresponds to _____________ microns?
200 mesh sieve size corresponds to _____________ microns?
A. 24
B. 74
C. 154
D. 200
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Reciprocal of sphericity is termed as the________________?
Reciprocal of sphericity is termed as the________________?A. Specific surface ratio
B. Shape factor
C. Sauter diameter
D. Surface area per unit massA sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is_________________?
A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is_________________?A. 0.50
B. 0.58
C. 0.68
D. 0.62Ball mills and tube mills with flint or porcelain balls are used for size reduction of_______________?
Ball mills and tube mills with flint or porcelain balls are used for size reduction of_______________?A. Asbestos
B. Rubber
C. Non-metallic ores
D. LimestoneSize reduction of _____________ is accomplished in steam heated rollers and roll crushers?
Size reduction of _____________ is accomplished in steam heated rollers and roll crushers?A. Resins
B. Gums
C. Hard rubber
D. WaxesWhich of the following crushing laws is most accurately applicable to the fine grinding of materials ?
Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?A. Bond’s crushing law
B. Kick’s law
C. Rittinger’s law
D. None of theseIntroduction 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?
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?A. Plane
B. Curved
C. Ribbed
D. Either A. or B.