Related Questions

Size reduction of __________ is accomplished in steam heated rollers and roll crushers.
A Resins
B Gums
C Hard rubber
D Waxes
In jaw crushers a motor has to often start against ________ load.
A Heavy
B Medium
C Normal
D Low
Which of the following crushers can be considered as a combination of a jaw crusher and a roller crusher?
A Rod mill
B Fluid energy mill
C Gyratory crusher
D Ball mill
Reduction ratio of crushers is the
A Ratio of feed opening to discharge opening
B Ratio of discharge opening to feed opening
C Determining factor for minimum dia of the feed and the product
D None of these
Size reduction mechanism used in Jaw crushers is
A Attrition
B Compression
C Cutting
D Impact
Toothed roll crushers achieve size reduction by
A Tearing (shear) and compression
B Impact and attrition
C Both A & B
D Neither A nor B
The value of 'angle of nip' is generally about
A 16°
B 32°
C 52°
D 64°
What is the usual value of angle of nip for crushing of ordinary rock in smooth steel crushing rolls?
A 16°
B 32°
C 40°
D 46°
Angle of nip of the crushing rolls does not depend upon the
A Diameter of the rolls
B Speed of the rolls
C Product size
D Feed size
"Nip in the bud" means ----
A Destroy at the very beginning
B Bed of the rose
C The beginning
D Rise at the beginning

Next steps