CHEMICAL ENGINEERING

Question: In case of venturimeters, friction losses are about __________ percent of maximum velocity head.
[A].

2

[B].

8

[C].

12

[D].

20

Answer: Option A

Explanation:

No answer description available for this question.

Question: A fluid whose apparent viscosity increases with shear rate is termed as the __________ fluid.
[A].

Newtonion

[B].

viscous

[C].

dilatant

[D].

non-viscous

Answer: Option C

Explanation:

No answer description available for this question.

Question: In case of coutte flow, the fluid flow is between two large flat parallel plates with
[A].

top plate moving and the bottom plate fixed.

[B].

bottom plate moving and the top plate fixed.

[C].

both the plates fixed.

[D].

both the plates moving.

Answer: Option A

Explanation:

No answer description available for this question.

Question: In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)
[A].

Vavg

[B].

1.2 Vavg

[C].

1.5 Vavg

[D].

1.8 Vavg

Answer: Option B

Explanation:

No answer description available for this question.

Question: Brownian movement is prominent in the particle size range of __________ microns in case of settling of a particle in a fluid.
[A].

2 to 3

[B].

0.01 to 0.10

[C].

200 to 300

[D].

100 to 1000

Answer: Option A

Explanation:

No answer description available for this question.

Question: __________ flow means the flow of incompressible fluid with no shear.
[A].

Potential

[B].

Streamline

[C].

Creep

[D].

Boundary layer

Answer: Option A

Explanation:

No answer description available for this question.

Question: Fanning friction factor is equal to(where, fB = Blassius friction factor).
[A].

fB/4

[B].

fB/2

[C].

4fB

[D].

2fB

Answer: Option A

Explanation:

No answer description available for this question.

Question: For flow of fluids through packed bed, the superficial velocity is
[A].

less than the average velocity through channels.

[B].

more than the average velocity through channels.

[C].

dependent on the pressure drop across the bed.

[D].

same as the average velocity through channels.

Answer: Option A

Explanation:

No answer description available for this question.

Question: In fluid flow, the stagnation point is defined as a point, where the __________ is zero.
[A].

flow velocity

[B].

pressure

[C].

total energy

[D].

all (a), (b) and (c)

Answer: Option A

Explanation:

No answer description available for this question.

Question: Each term of the Bernoulli’s equation written in the form, , represents the total energy per unit
[A].

mass

[B].

volume

[C].

specific weight

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.