A. Attrition
B. Impact
C. Both A. & B.
D. Neither A. nor B.
The grinding in a hammer crusher takes place due to the_______________? Read More »
Mechanical Operations A. Speed
B. Thickness
C. Length
D. None of these
A. Rod mills
B. Gyratory crushers
C. Jaw crushers
D. Smooth roll crushers
Size reduction does not occur due to compression in case of________________? Read More »
Mechanical Operations A. M ∝ √D
B. M ∝ D2
C. M ∝ D3
D. M ∝ D
A. Is a ball mill
B. Employs flints or ceramic pebbles as the grinding medium
C. Is a tube mill lined with ceramic or other non-metallic liner
D. Both B. and C.
A pebble mill_________________? Read More »
Mechanical Operations A. Weber
B. Peclet
C. Brinkman
D. Schmidt
A. Have the same diameter
B. Are rotated towards each other
C. Run either at the same or different speeds
D. All A., B. and C.
In a roll crusher, both the rolls_________________? Read More »
Mechanical Operations A. Collector
B. Frother
C. Modifier
D. Activator
A. Forged/cast steel
B. Lead
C. Cast iron
D. Alloy steel
Balls for ball mills are never made of_________________? Read More »
Mechanical Operations A. Mixing highly viscous pastes
B. Blending immiscible liquids
C. Mixing liquids at very high temperature (> 250 °C)
D. None of these
Helical screw agitator is used for________________? Read More »
Mechanical Operations