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 A. At time zero
B. At the end of filtration
C. When half the filtrate has been obtained
D. At the end of filtration, but decreases with time subsequently
