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Chemical Engineering - Mechanical Operations

Exercise : Mechanical Operations - Section 9
11.
Carbon black is pulverised in a
hammer crusher
ball mill
roll crusher
gyratory crusher
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
The most efficient equipment for the removal of sub-micronic dust particles from blast furnace gas is the
venturi atomiser
gravity settling chamber
electro-static precipitator
cyclone separator
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
The filtrate flow rate in constant pressure filtration
continuously increases.
continuously decreases.
remains constant throughout.
may increase or decrease ; depends on the pressure.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Theoretical capacity of crushing rolls in tons/hr is given by (where, V = peripherial velocity, m/sec. W = width of rolls, m Dr = distance between rolls ρ = density of material to be crushed, kg/m3 here, V =πN.D where, N = speed of the rolls in rotation per second (rps) D = diameter of rolls, m)
3.6 V.W.Dr.ρ
3.6 V.W. ρ
3.6 W.Dr.ρ
3.6 V.W.Dr/ρ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of
electromagnets
cams or eccentric shafts
unblanced fly wheels
either (a), (b) or (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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