A. Dicers
B. Knife cutters
C. Slitters
D. Tube mills
Related Mcqs:
- Which of the following equations is Rittinger’s crushing law? (Where P = power required by the machine, m = feed rate, k = a constant, D̅ sa & D̅ sb = volume surface mean diameter of feed & product respectively) ?
A. P/m = K/ √Dp
B. P/m = K . ln D̅ sa/D̅ sb
C. P/m = K . (1/ D̅ sb – 1/D̅ sa)
D. None of these - Production rate _____________ with increased fineness, with a given energy input to the size reduction machine?
A. Decreases
B. Increases
C. Remains unchanged
D. May increase or decrease; depends on the machine - Crushing efficiency of a machine ranges between __________________ percent?
A. 0.1 to 2
B. 5 to 10
C. 20 to 25
D. 50 to 70 - At low Reynold’s number, the power (P) required for agitating a fluid in a stirred tank becomes independent of inertial forces. In this limit, indicate which of the following relations is satisfied: Po = ρ/ρN3 D5: Power number Re = ρ N D2/μ: Reynold’s number N is the impeller rotational speed, and D is the impeller diameter ?
A. Po ∝ Re-1.0
B. Po ∝ Re0.0
C. Po ∝ Re0.5
D. Po ∝ Re1.0 - Which of the following is a fine crusher ?
A. Blake jaw crusher
B. Gyratory crusher
C. Toothed roll crusher
D. Dodge jaw crusher - Which of the following crushing laws is most accurately applicable to the fine grinding of materials ?
A. Bond’s crushing law
B. Kick’s law
C. Rittinger’s law
D. None of these - Which of the following terminology is not used for size reduction of materials to fine sizes or powders ?
A. Comminution
B. Dispersion
C. Pulverisation
D. Compression - Which of the following is not an industrial screening equipment ?
A. Sharpies centrifuge
B. Vibrating screen
C. Grizzly
D. Trommel - Which of the following is the softest material ?
A. Talc
B. Feldspar
C. Corundum
D. Calcite - Which of the following screens has the maximum capacity ?
A. Grizzlies
B. Trommels
C. Shaking screen
D. Vibrating screen
