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Chemical Engineering - Mechanical Operations

Exercise : Mechanical Operations - Section 7
6.
For classification of potable (drinking) water, we use a __________ filter.
gravity sand
plate and frame
vacuum leaf
rotary vacuum
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Hot, lumpy & abrasive materials are best transported by using a/an __________ conveyor.
apron
belt
screw
flight
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Additives used for promoting the floccula-tion of particles is a/an
electrolyte
surface active agent
both (a) & (b)
neither (a) nor (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
In case of grinding in a ball mill
wet grinding achieves a finer product size than dry grinding.
its capacity decreases with increasing fineness of the products.
grinding cost and power requirement increases with increasing fineness of the products.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
The capacity of a classifier in 'tons of solid/hr' is given by (where, A = cross-sectional area, m2 V = rising velocity of fluid, m/sec.S = percentage of solids in the suspension by volume.ρ = density of solids, kg/m3)
3.6 AVS.ρ
3.6 A.V.ρ
3.6 A.S. ρ
3.6 AVS/ρ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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