Chemical Engineering

Question: Buckingham-π theorem states that in any physical problem including ‘n’ quantities having ‘m’ diamensions, the quantities can be arranged into __________ independent dimensionless parameters.
[A].

m

[B].

n

[C].

n-m

[D].

n/m

Answer: Option C

Explanation:

No answer description available for this question.

Question: All pipes of a particular nominal size have the same
[A].

inside diameter

[B].

outside diameter

[C].

thickness

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: For turbulent flow in smooth circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the wall of the pipe and the friction velocity ‘v’, and it follows a __________ relationship.
[A].

logarithmic

[B].

linear

[C].

hyperbolic

[D].

parabolic

Answer: Option A

Explanation:

No answer description available for this question.

Question: Fanning equation is given by. It is applicable to __________ region flow.
[A].

transition

[B].

laminar

[C].

turbulent

[D].

both (b) and (c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: Drag co-efficient for flow past immersed body is the ratio of __________ to the product of velocity head and density.
[A].

shear stress

[B].

shear force

[C].

average drag per unit projected area

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: Newton’s law of viscosity relates the
[A].

shear stress and velocity.

[B].

velocity gradient and pressure intensity.

[C].

shear stress and rate of angular deformation in a fluid.

[D].

pressure gradient and rate of angular deformation.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Flow measurement in an open channel is done by a/an
[A].

venturimeter

[B].

orificemeter

[C].

weir

[D].

rotameter

Answer: Option C

Explanation:

No answer description available for this question.

Question: For laminar flow of Newtonion fluids through a circular pipe, for a given pressure drop and length & diameter of pipe, the velocity of fluid is proportional to(where, μ = fluid viscosity )
[A].

μ

[B].

1/μ

[C].

μ

[D].

1/μ

Answer: Option B

Explanation:

No answer description available for this question.

Question: Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the
[A].

temperature

[B].

pressure

[C].

both (a) & (b)

[D].

neither (a) nor (b)

Answer: Option C

Explanation:

No answer description available for this question.

Question: For laminar flow of Newtonion fluid in a circular pipe, the velocity distribution is a function of the distance ‘d’ measured from the centre line of the pipe, and it follows a __________ relationship.
[A].

logarithmic

[B].

parabolic

[C].

hyperbolic

[D].

linear

Answer: Option B

Explanation:

No answer description available for this question.