Related Questions

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
According to Taggart's rule for selecting between a gyratory crusher and a jaw crusher; the later should be used, if the hourly tonnage to be crushed divided by the square of the gape expressed in cm is less than
A 0.00184
B 0.0184
C 0.184
D 1.84
During size reduction by a jaw crusher, the energy consumed decreases with the
A Decreasing size of product at constant size of feed
B Decreasing machine capacity
C Increasing size of feed at constant reduction ratio
D None of these
Capacity (in tons/hr) of jaw/gyratory crusher is equal to (where, L = length of the receiving opening, cm S = greater width of the discharge opening, cm)
A 0.01 L.S
B 0.087 L.S
C L.S
D $$\frac{{{\text{L}}.{\text{S}}}}{{0.087}}$$
Which of the following parts of a jaw crusher is subjected to maximum wear and tear during its operation?
A check plates
B jaw plates
C toggles
D crush shaft
Electrical energy consumed by a jaw crusher is not a function of the
A average feed size
B average product size
C machine capacity
D none of these
Which of the following is not a part of the Blake jaw crusher?
A Hanger
B Check plates
C Toggles
D Pitman
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°
For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to
A The new surface created
B The size reduction ratio
C The change in volume due to crushing
D None of these
In case of a hammer crusher, the
A Feed may be highly abrasive (Moh's scale >5)
B Minimum product size is 3 mm
C Maximum feed size may be 50 mm
D Rotor shaft carrying hammers can be vertical or horizontal

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