Mechanical Operations - Study Mode
[#171] Crushing efficiency is the ratio of the
Correct Answer
(A) Surface energy created by crushing to the energy absorbed by the solid
[#172] Dust laden air can be purified using a
Correct Answer
(A) Cyclone separator
[#173] A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is
Correct Answer
(A) 0.50
[#174] Which of the following screens has the maximum capacity?
Correct Answer
(D) Vibrating screen
[#175] Solid particles of different densities are separated by
Correct Answer
(D) Sorting classifier