Related Questions

Ultrafine grinders operate principally by
A Slow compression
B Impact
C Attrition
D Cutting action
Which of the following size reduction equipments employs mainly attrition for ultrafine grinding?
A Jet mills
B Fluid energy mill
C Micronizer
D All of the above
The reduction ratio for fine grinders is
A 5-10
B 10-20
C 20-40
D As high as 100
Size measurement of ultrafine particles can be best expressed in terms of
A Centimetre
B Screen size
C Micron
D Surface area per unit mass
Temperature of the product during ultrafine grinding
A Increases
B Decreases
C Remains constant
D May increase or decrease ; depends on the material being ground
For the transportation of ultrafine particles, the equipment used is a........conveyor.
A Belt
B Pneumatic
C Screw
D None of these
To get ultrafine particles, the equipment used is a
A Ball mill
B Rod mill
C Hammer crusher
D Fluid energy mill
Which of the following is not an ultrafine grinder (colloid mill)?
A Micronizers
B Agitated mills and fluid energy mills
C Toothed roll crusher
D Hammer mills with internal classification
In centre less grinders, the maximum angular adjustment of the regulating wheel is
A 5°
B 10°
C 15°
D 20°
In centerless grinders, the regulating wheel is inclined at
A 0° to 8°
B 9° to 15°
C 16° to 20°
D 21° to 25°

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