Mechanical Operations - Study Mode

[#336] Which of the following size reduction equipments employs mainly attrition for ultrafine grinding?
Correct Answer

(D) All of the above

[#337] Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle and D = equivalent diameter of particle).
Correct Answer

(A) $$frac{{6{ ext{V}}}}{{{ ext{D}}.{ ext{S}}}}$$

[#338] A fluid energy mill is used for
Correct Answer

(C) Ultra grinding

[#339] A __________ employs a set of screen across a flow channel for the separation of dirt/rust from a flowing liquid stream.
Correct Answer

(C) Strainer

[#340] The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the
Correct Answer

(C) Electro-static precipitator