A. Roll crusher
B. Ball mill
C. Tube mill
D. Hammer mill
Mechanical Operations
Mechanical Operations
A. 10 mm screen and retained on 5 mm screen
B. 5 mm screen and retained on 10 mm screen
C. Both 5 mm and 10 mm screens
D. Neither 5 mm nor 10 mm screen
A. N ∝ 1/√D
B. N ∝ √D
C. N ∝ D
D. N ∝ 1/D
A. Po ∝ Re-1.0
B. Po ∝ Re0.0
C. Po ∝ Re0.5
D. Po ∝ Re1.0
A. Thickener
B. Classifier
C. Strainer
D. Clarifier
A. > 10
B. < 10
C. > 100
D. < 100
A. Tubular bowl
B. Disc-bowl
C. Perforated horizontal basket continuous
D. Suspended batch basket
A. Secondary
B. Fine
C. Primary
D. Ultrafine
A. British standard screens
B. German standard screens (DIN 1171) etc
C. American standard screens (ASTM and Tyler standard screens)
D. All A., B. and C.
A. Vacuum
B. Sand
C. Plate & frame
D. Rotary
