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Chemical Engineering - Mechanical Operations

Exercise : Mechanical Operations - Section 7
36.
Energy requirement (per unit mass of material crushed/ground) is highest for
jaw crusher
rod mill
ball mill
fluid energy mill
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
The energy consumed by a ball mill depends on
its speed.
its ball load.
the density of the material being ground.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Energy consumption in a crusher decreases with increase in the
size of the product (at constant feed size).
capacity of the crushing machine.
size of feed (at constant reduction ratio).
all (a), (b) & (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
In a mixer, the quantity, (v. L/D) is termed as __________ number(where, v = longitudinal velocity of material, L = length of the mixer, D = diffusivity in axial mixing).
Weber
Peclet
Brinkman
Schmidt
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
The term 'angle of nip' is concerned with the operation of the __________ crushers.
jaw
roll
gyratory
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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