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Chemical Engineering - Mechanical Operations

Exercise : Mechanical Operations - Section 3
31.
Production rate __________ with increased fineness, with a given energy input to the size reduction machine.
decreases
increases
remains unchanged
may increase or decrease; depends on the machine
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
Gold ore concentration is mostly done using
jigging
tabling
froth floatation
elutriation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Mixing of light fine powder such as insecticides is done by
banbery mixer
pug mill
impact wheels
kneader
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Run of mine (ROM) coal is crushed by a __________ for use in domestic ovens.
jaw crusher
hammer crusher
ball mill
tube mill
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity ?
Sphere
Cube
Cylinder (L/D = 1)
Raschig rings
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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