Mechanical Operations - Study Mode
[#196] During size reduction by a jaw crusher, the energy consumed decreases with the
Correct Answer
(C) Increasing size of feed at constant reduction ratio
[#197] Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is __________ microns.
Correct Answer
(C) < 74
[#198] Which of the following relationships between co-efficinet of friction (μ) between rock & roll and a (half of the angle of nip) of the particle to be crushed is correct ?
Correct Answer
(B) Μ ≥ tan α
[#199] Float and sink test determines the possibility of cleaning of coal by a process based on the
Correct Answer
(A) Gravity separation
[#200] Which of the following represents the plot of filtrate volume versus time for constant pressure filtration?
Correct Answer
(A) Parabola