CHEMICAL ENGINEERING

Question: A streamline is a line in flow field,
[A].

that is traced by all the fluid particles passing through a given point.

[B].

along which a fluid particle travels.

[C].

such that at every point on it, the velocity is tangential to it.

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: An isentropic process is the one, in which
[A].

pv = constant

[B].

pvr = constant

[C].

pvr = constant, and process is reversible

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: A Newtonion fluid is that
[A].

which follows Newton’s law of motion.

[B].

which needs a minimum shear, before it starts deforming.

[C].

for which shear & deformation are related as

[D].

none of these.

Answer: Option C

Explanation:

No answer description available for this question.

Question: A fluid is a substance, that
[A].

has to be kept in a closed container.

[B].

is almost incompressible.

[C].

has zero shear stress.

[D].

flows when even a small shear is applied to it.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Which of the following options will facilitate the achievement of a very high head (say 30 metres) in case of a centrifugal pump?
[A].

Increasing the impeller speed and the volute area.

[B].

Increasing the number of vanes in the impeller.

[C].

Mounting of two or more impellers in series on a single shaft.

[D].

Either of (a), (b) or (c).

Answer: Option C

Explanation:

No answer description available for this question.

Question: A special type of liquid transporting device is the diffuser pump, in which __________ are minimised.
[A].

bearing losses

[B].

disk friction

[C].

shock losses

[D].

cavitation

Answer: Option C

Explanation:

No answer description available for this question.

Question: __________ pump is the most suitable device for discharging a liquid against a pressure of ≥ 1500 kgf/cm2.
[A].

Centrifugal

[B].

Piston

[C].

Plunger

[D].

Vane

Answer: Option C

Explanation:

No answer description available for this question.

Question: It is possible to integrate an automatic flow controller to a
[A].

flow nozzle

[B].

venturimeter

[C].

rotameter

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: In case of a rotameter, the density of the float material is __________ that of the liquid it replaces.
[A].

more than

[B].

less than

[C].

equal to

[D].

either (a) or (b)

Answer: Option A

Explanation:

No answer description available for this question.

Question: Open channel liquid flow is most conveniently measured by a
[A].

hot wire anemometer

[B].

notch

[C].

rotameter

[D].

segmental orifice

Answer: Option B

Explanation:

No answer description available for this question.