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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 7
16.
With increase in the schedule number of a pipe of a particular nominal size, the
wall thickness also increases.
I.D. of the pipe decreases.
O.D. of the pipe remains constant.
all (a), (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
Turbine impeller
produces only radial current.
produces only tangential current.
is effective over wide range of viscosities.
does not produce tangential current.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Friction produced by the formation of wakes is called the __________ friction.
disk
skin
form
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Various efficiencies of a centrifugal pump are related as (where, ηm = mechanical efficiency ηv = volumetric efficiency. ηma = manometric efficiency ηo = overall efficiency)
ηma x ηm x ηv = ηo
ηm = ηv . ηma
ηma = ηm x ηv
ηv = ηm x ηma
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
When the pipe Reynold's number is 6000, the flow is generally
viscous
laminar
turbulent
transition
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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