CHEMICAL ENGINEERING

Question: Absolute viscosity of a fluid is a function of the __________ of the fluid.
[A].

motion

[B].

pressure & temperature

[C].

shearing stress

[D].

both(b)&(c)

Answer: Option D

Explanation:

No answer description available for this question.

Question: f = 16/NRe, is valid for
[A].

turbulent flow

[B].

laminar flow through an open channel

[C].

steady flow

[D].

none of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Foot valve provided in the pump is a __________ valve.
[A].

direction control

[B].

back pressure

[C].

relief

[D].

pressure reduction

Answer: Option B

Explanation:

No answer description available for this question.

Question: Friction produced by the formation of wakes is called the __________ friction.
[A].

disk

[B].

skin

[C].

form

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.

Question: For turbulent flow of newtonion fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is
[A].

0.5

[B].

1

[C].

0.66

[D].

< 0.5

Answer: Option B

Explanation:

No answer description available for this question.

Question: For laminar flow through a closed conduit
[A].

Vmax = 2Vav

[B].

Vmax = Vav

[C].

Vmax = 1.5Vav

[D].

Vmax = 0.5Vav

Answer: Option A

Explanation:

No answer description available for this question.

Question: With increase in temperature, the vapor pressure of liquids
[A].

increases

[B].

increases linearly

[C].

decreases

[D].

remains constant

Answer: Option A

Explanation:

No answer description available for this question.

Question: In an incompressible flow of fluid, the fluid
[A].

temperature remains constant.

[B].

compressibility is greater than zero.

[C].

density does not change with pressure & temperature.

[D].

is frictionless.

Answer: Option C

Explanation:

No answer description available for this question.

Question: One stoke (unit of kinematic viscosity) is equivalent to
[A].

1 cm2/second

[B].

1 m2/second

[C].

1 gm/cm. second

[D].

1 kg . m/second

Answer: Option A

Explanation:

No answer description available for this question.

Question: With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)
[A].

decreases.

[B].

increases linearly.

[C].

increases exponentially.

[D].

remains constant.

Answer: Option B

Explanation:

No answer description available for this question.