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Biochemical Engineering - Fluid Flow

Exercise : Fluid Flow - Section 1
  • Fluid Flow - Section 1
11.
Mixing in stirred tank reactors can
be described as either laminar, transient or turbulent
achieve turbulent conditions by increasing the stirrer speed
induce laminar flow conditions by the addition of baffles
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
In animal cell bioreactor, bubble damage can be minimized by
the addition of a shear protectorant
using a bubble free oxygen delivery system
headspace aeration
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
The viscosity of a fluid changes with either stirrer speed or mixing time. But when mixing ceases, the viscosity returns to its original state. This fluid is best described as
newtonian
rheopectic
viscoelastic
thixotropic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
In sparged mammalian cell bioreactors, the cell damage is caused because of
shear stress arising during mixing of the cell culture fluid
shear stresses arising from the breakup of bubbles at the liquid surface
shear stresses between bubbles in foam at the liquid surface
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
The SI unit for viscosity is
kg.m-1.s-1
kg.m-2.s-2
kg.m-3.s-1
kg.m-1.s-2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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