A. Drag
B. Ribbon
C. Screw
D. Slat
A. 1
B. < 1
C. > 1
D. ∞
Sphericity of pulverised coal is__________________? Read More »
Mechanical Operations A. Df/Dp
B. Dp/Df
C. Df – Dp
D. None of these
A. Attrition
B. Compression
C. Impact
D. Cutting
Maximum size reduction in a ball mill is done by the, ______________ action? Read More »
Mechanical Operations A. Blake jaw crusher
B. Gyratory crusher
C. Toothed roll crusher
D. Dodge jaw crusher
Which of the following is a fine crusher ? Read More »
Mechanical Operations A. Tumbler
B. Banbury
C. Muller
D. Ribbon blender
A. π = (A/D2)
B. π/6 = (V/D3)
C. AD/V
D. None of these
A. Primary
B. Intermediate
C. Fine
D. Ultrafine
Gravity stamp mill is meant for the ___________________ crushing? Read More »
Mechanical Operations A. Light metal powder down upto 4 mesh size
B. Dry chemicals
C. Heavy tonnages of rocks or gravel
D. Powdered food & granular materials
A. Cutting
B. Grinding
C. Ultra-grinding
D. Crushing
A fluid energy mill is used for __________________? Read More »
Mechanical Operations