Related Mcqs:

1. Mechanical conveyors which push the material along an endless trough or tube are called scrappers. Which of the following conveying equipments comes under the category of „scrappers‟ ?

   A. Bucket conveyor
   B. Flight conveyor
   C. Screw conveyor
   D. Both B. and C.

2. Filtration capacity of a rotary drum vacuum filter depends upon the_______________?

   A. Cake thickness
   B. Characteristics of the feed slurry
   C. Both A. & B.
   D. Neither A. nor B.

3. The capacity of a belt conveyor depends upon two factors. If one is the cross-section of the load, the other is the _____________ of the belt?

   A. Speed
   B. Thickness
   C. Length
   D. None of these

4. Rittinger number which designates the new surface produced per unit of mechanical energy absorbed by the material being crushed, depends on the ______________________?

   A. State or manner of application of the crushing force
   B. Ultimate strength of the material
   C. Elastic constant of the material
   D. All A., B. and C.

5. Width and speed of a conveyor belt depends upon the ______________ of the material?

   A. Lump size
   B. Bulk density
   C. Both A. & B.
   D. Neither A. nor B.

6. Crushing efficiency is the ratio of the ______________________ ?

   A. Surface energy created by crushing to the energy absorbed by the solid
   B. Energy absorbed by the solid to that fed to the machine
   C. Energy fed to the machine to the surface energy created by crushing
   D. Energy absorbed by the solid to the surface energy created by crushing

7. ______________________ balls capable of grinding the feed in a ball mill gives the maximum efficiency ?

   A. Cast iron
   B. Minimum size
   C. Maximum size
   D. Elliptical

8. 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

9. Capacity of flight conveyor in tons/hr is given by (where, W & D = width and depth of flight respectively in metre V = speed of the conveyor, metre/second ρ = bulk density of material, kg/m3) ?

   A. 3.6 W.D.V.ρ
   B. 3.6 W.D.V
   C. 3.6 W.V.ρ
   D. 3.6 D.V.ρ

10. Screen capacity is proportional to (where, S = screen aperture)____________________?

    A. S
    B. 1/S
    C. S2
    D. √S