A. Feed rate
B. Rotor speed
C. Clearance between hammer & grinding plates
D. All A., B. and C.
Related Mcqs:
- The capacity of a gyratory crusher is ______________ that of a jaw crusher with the same gape, handling the same feed & for the same product size range.?
A. Same as
B. 2.5 times
C. 5 times
D. 10 times - In case of a hammer crusher ?
A. Crushing takes place by impact breaking
B. Maximum acceptable feed size is 30 cms
C. Reduction ratio can be varied by adjusting the distance from cage to hammers
D. All A., B. and C. - 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 - The grinding in a hammer crusher takes place due to the_______________?
A. Attrition
B. Impact
C. Both A. & B.
D. Neither A. nor B. - Choke crushing (in case of a Jaw crusher) compared to free crushing__________________?
A. Results in increased capacity
B. Consumes less power
C. Consumes more power
D. Both A. and C. - Size reduction of ice and gypsum can be accomplished suitably by a _______________ crusher?
A. Blake jaw
B. Toothed roll
C. Gyratory
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 - Which of the following comes in the category of primary crusher for hard and tough stone ?
A. Jaw crusher
B. Cone crusher
C. Gyratory crusher
D. None of these - Energy consumption in a crusher decreases with increase in the________________________?
A. Size of the product (at constant feed size)
B. Capacity of the crushing machine
C. Size of feed (at constant reduction ratio)
D. All A., B. & C.
