A. Bucket elevator
B. Pneumatic conveyor
C. Screw conveyor
D. Belt conveyor
A. Filtering
B. Washing
C. Drying
D. All A., B. & C.
A. Same as
B. 2.5 times
C. 5 times
D. 10 times
A. 0.33-0.45
B. 1.33-1.45
C. 0.5-2
D. 1.5-2.5
Optimum ratio of operating speed to critical speed of a trommel is_____________________? Read More »
Mechanical Operations A. Lump size
B. Bulk density
C. Both A. & B.
D. Neither A. nor B.
Width and speed of a conveyor belt depends upon the ______________ of the material? Read More »
Mechanical Operations A. Attrition
B. Compression
C. Cutting
D. None of these
Soft & non-abrasive materials can be made into fines by________________________? Read More »
Mechanical Operations A. Jaw crusher
B. Cone crusher
C. Impact crusher
D. Toothed roll crusher
Which is a secondary crusher for a hard & tough stone ? Read More »
Mechanical Operations A. Separation efficiency
B. Selectivity index
C. Concentration ratio
D. None of these
A. Cage
B. Hammer
C. Both A. & B.
D. Neither A. nor B.
A. Crushing
B. Coarse grinding
C. Fine grinding
D. Attrition
Ball mill is used for__________________? Read More »
Mechanical Operations