Chemical Engineering

Question: Navier-Stokes equation is useful in the analysis of __________ fluid flow problems.
[A].

non-viscous

[B].

viscous

[C].

turbulent

[D].

rotational

Answer: Option B

Explanation:

No answer description available for this question.

Question: Gradually varying fluid flow is an example of __________ flow.
[A].

non-steady uniform

[B].

non-steady non-uniform

[C].

steady uniform

[D].

steady non-uniform

Answer: Option A

Explanation:

No answer description available for this question.

Question: A weir is used to measure the large water discharge rate from a river or from an open channel. A weir is not of __________ shape.
[A].

circular

[B].

rectangular

[C].

triangular

[D].

trapezoidal

Answer: Option A

Explanation:

No answer description available for this question.

Question: Co-efficient of discharge (Cd) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about
[A].

0.42

[B].

0.62

[C].

0.82

[D].

0.98

Answer: Option B

Explanation:

No answer description available for this question.

Question: Nature of fluid flow during the opening of a valve in a pipeline is
[A].

laminar

[B].

unsteady

[C].

steady

[D].

uniform

Answer: Option B

Explanation:

No answer description available for this question.

Question: The buoyant force acting on a floating body is dependent on the
[A].

viscosity of the liquid.

[B].

weight of the liquid displaced.

[C].

depth of immersion of the body.

[D].

surface tension of the liquid.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Drag force acting on a body does not depend upon the
[A].

density of the fluid.

[B].

density of the body.

[C].

velocity of the body.

[D].

projected area of the body.

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ forces do not act in case of fluid flow.
[A].

Elastic

[B].

Tensile

[C].

Vibratory

[D].

Centrifugal

Answer: Option B

Explanation:

No answer description available for this question.

Question: Cavitation can be prevented by
[A].

suitably designing the pump.

[B].

maintaining the suction head sufficiently greater than the vapour pressure.

[C].

maintaining suction head = developed head.

[D].

maintaining suction head lower than the vapour pressure.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Efficiency of power transmission (η) through a circular pipe is given by (ht – hf)/ht, which has a maximum value of __________ percent.
[A].

33:3

[B].

50

[C].

66.6

[D].

88.8

Answer: Option C

Explanation:

No answer description available for this question.