In case of a hammer crusher ?

Related Mcqs:

1. In case of a hammer crusher, the final product size depends on the____________________?

   A. Feed rate
   B. Rotor speed
   C. Clearance between hammer & grinding plates
   D. All A., B. and C.

2. 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

3. 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

4. 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

5. The grinding in a hammer crusher takes place due to the_______________?

   A. Attrition
   B. Impact
   C. Both A. & B.
   D. Neither A. nor B.

6. 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.

7. 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. L.S/0.087

8. Which of the following is a fine crusher ?

   A. Blake jaw crusher
   B. Gyratory crusher
   C. Toothed roll crusher
   D. Dodge jaw crusher

9. Which of the following is not a part of the Blake jaw crusher ?

   A. Hanger
   B. Check plates
   C. Toggles
   D. Pitman

10. 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