Chemical Engineering - Fluid Mechanics

1. 

Pascal law is not applicable for a/an __________ fluid.

A. accelerating frictionless
B. static
C. uniformly moving
D. none of these

Answer: Option D

Explanation:

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2. 

In a fluidised bed reactor

A. temperature gradients are very high.
B. temperature is more or less uniform.
C. hot spots are formed.
D. segregation of the solids occurs.

Answer: Option B

Explanation:

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3. 

The flow of a liquid through tapering pipe at a constant rate is an example of __________ flow.

A. steady uniform
B. steady non uniform
C. unsteady uniform
D. unsteady non uniform

Answer: Option B

Explanation:

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4. 

Pick out the correct statement pertaining to transition/ entrance length in fluid flow.

A. 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.
B. Transition length for laminar flow of Newtonion fluids in a pipe of diameter 'd' is equal to 0.05. D.NRe.
C. Transition length for turbulent flow of Newtonion fluids in a smooth pipe of diameter 'd' is equal to 50 D.
D. all (a), (b) and (c).

Answer: Option D

Explanation:

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5. 

A perfect gas

A. does not satisfy PV = nRT.
B. is incompressible and has zero viscosity.
C. has constant specific heat.
D. can't develop shear stresses.

Answer: Option C

Explanation:

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