A. Specific gravities
B. Wettability
C. Shape
D. None of these
A. Swirling
B. Vortexing
C. Both A. & B.
D. Neither A. nor B.
Use of baffles in agitators help in minimising the ______________ tendency? Read More »
Mechanical Operations A. Wet grinding in low viscous suspension
B. Wet grinding in high viscous suspension
C. Dry grinding of large particles (upto 1.25 cms)
D. Dry grinding of large particles in un-baffed mills
A. Has a higher length/diameter ratio
B. Produces a coarser product
C. Has a higher diameter/length ratio
D. Uses much larger balls
A tube mill compared to a ball mill__________________? Read More »
Mechanical Operations A. Coarse
B. Fine
C. Any size
D. None of these
Grizzlies are used for separating _____________ solids? Read More »
Mechanical Operations A. Specific surface of product is more
B. Product has lesser size uniformity
C. Production rate at a given limiting size is lower
D. Operation is economical
In closed circuit grinding as compared to open circuit grinding, the_________________? Read More »
Mechanical Operations A. Metallic wire woven mesh
B. Polyester fibres
C. Cotton fibres
D. Nylon fibres
In bag filters, filter fabrics are never made of__________________? Read More »
Mechanical Operations A. The new surface created
B. The size reduction ratio
C. The change in volume due to crushing
D. None of these
A. Grizzlies
B. Trommels
C. Shaking screen
D. Vibrating screen
Which of the following screens has the maximum capacity ? Read More »
Mechanical Operations A. π = (A/D2)
B. 2π = (2A/D2)
C. π/6 = (V/D3)
D. AD/V
For spheres, volume shape factor is given by____________________? Read More »
Mechanical Operations