Related Questions

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
Grinding wheel made of silicon carbide is most suitable for grinding materials of low tensile strength (e.g; tough bronze). Grinding is a __________ operation.
A Turning
B Dressing
C Forming
D Surface finishing
For fast removal of materials during grinding, a _________ grinding wheel is used.
A Course grained
B Fine grained
C Medium grained
D None of these
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
The main size reduction operation in ultrafine grinders is
A Cutting
B Attrition
C Compression
D Impact
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
Ultrafine grinders operate principally by
A Slow compression
B Impact
C Attrition
D Cutting action
What is suggested by the language and imagery in the following poem by Whitehead Hicky ? I hear them grinding , grinding through the night , The gaunt machines with arteries of fire, Muscled with iron, bowelled with smouldering light"
A All machines operate loudly .
B Machines can be compared to bodies.
C Anger against factories and mills is useless.
D Machiness are run by human bodies.

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