Fluid Mechanics

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.

Question: In fluid flow, the boundary layer separation can not occur
[A].

in case of boundaries experiencing form drag.

[B].

at points of abrupt changes in the flow directions.

[C].

in laminar flow.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Drag is defined as the force exerted by the
[A].

fluid on the solid in a direction opposite to flow.

[B].

fluid on the solid in the direction of flow.

[C].

solid on the fluid.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature )
[A].

1/T

[B].

1/T

[C].

T

[D].

T

Answer: Option C

Explanation:

No answer description available for this question.