Mixer used for rubber compounding is__________________?
A. mixer-extruder
B. Banbury internal mixer
C. Muller mixer
D. Pug mill
Month: February 2019
Half the angle of nip, (α), for a roll crusher is given by (where, dr, dp and df are diameters of crushing rolls, feed particles and rolls gap respectively) ?
Half the angle of nip, (α), for a roll crusher is given by (where, dr, dp and df are diameters of crushing rolls, feed particles and rolls gap respectively) ?
A. cos α = (dr + dp)/(dr + df)
B. cos α = (dr + df)/(dr + dp)
C. tan α = (dr + dp)/(dr + df)
D. sin α = (dr + dp)/(dr + df)
Which of the following can be most effectively used for clarification of lube oil and printing ink ?
Which of the following can be most effectively used for clarification of lube oil and printing ink ?
A. Sparkler filter
B. Pre-coat filter
C. Disc-bowl centrifuge
D. Sharpies super-centrifuge
For achieving maximum capacity of the ball mill, the ball charge should be equal to about ______________ percent of the ball mill volume?
For achieving maximum capacity of the ball mill, the ball charge should be equal to about ______________ percent of the ball mill volume?
A. 10
B. 25
C. 50
D. 75
_______________ mill is normally used for grinding of talc?
_______________ mill is normally used for grinding of talc?
A. Tube
B. Compartment
C. Ring-roll
D. Pebble
The most common filter aid is_________________?
The most common filter aid is_________________?
A. Diatomaceous earth
B. Calcium silicate
C. Sodium carbonate
D. Silica gel
The porosity of a compressible cake is _____________________?
The porosity of a compressible cake is _____________________?
A. Minimum at the filter medium
B. Minimum at the upstream face
C. Maximum at the filter medium
D. Same throughout the thickness of cake
Which of the following terminology is not used for size reduction of materials to fine sizes or powders ?
Which of the following terminology is not used for size reduction of materials to fine sizes or powders ?
A. Comminution
B. Dispersion
C. Pulverisation
D. Compression
200 mesh screen means 200 openings per_____________________?
200 mesh screen means 200 openings per_____________________?
A. cm2
B. cm
C. inch
D. inch2
Power consumption during turbulent flow in agitation tank is proportional to the ______________ of the liquid?
Power consumption during turbulent flow in agitation tank is proportional to the ______________ of the liquid?
A. Viscosity
B. Thermal conductivity
C. Surface tension
D. Density