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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 4
1.
Pascal law is not applicable for a/an __________ fluid.
accelerating frictionless
static
uniformly moving
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
In a fluidised bed reactor
temperature gradients are very high.
temperature is more or less uniform.
hot spots are formed.
segregation of the solids occurs.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The flow of a liquid through tapering pipe at a constant rate is an example of __________ flow.
steady uniform
steady non uniform
unsteady uniform
unsteady non uniform
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Pick out the correct statement pertaining to transition/ entrance length in fluid flow.
The length of entrance region of pipe, in which full development of fluid flow takes place such that velocity profile does not change downstream, is called the transition length.
Transition length for laminar flow of Newtonion fluids in a pipe of diameter 'd' is equal to 0.05. D.NRe.
Transition length for turbulent flow of Newtonion fluids in a smooth pipe of diameter 'd' is equal to 50 D.
all (a), (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
A perfect gas
does not satisfy PV = nRT.
is incompressible and has zero viscosity.
has constant specific heat.
can't develop shear stresses.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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