CHEMICAL ENGINEERING

Question: Kinetic energy of fluid per unit weight represented by the velocity head is given by
[A].

2v2/gc

[B].

v2/2gc

[C].

ρv2/gc

[D].

ρ.v2/2gc

Answer: Option B

Explanation:

No answer description available for this question.

Question: Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f1 and that for smooth pipe is f2. Pick out the correct statement.
[A].

f1 = f2

[B].

f1 < f2

[C].

f1 > f2

[D].

data not sufficient to relate f1 & f2

Answer: Option C

Explanation:

No answer description available for this question.

Question: N. second/m2 is
[A].

the S.I. unit of dynamic viscosity.

[B].

the S.I. unit of kinematic viscosity.

[C].

equivalent to one poise.

[D].

equivalent to one stoke.

Answer: Option A

Explanation:

No answer description available for this question.

Question: As per Newton’s law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to(where, μ = fluid viscosity)
[A].

1/μ

[B].

μ

[C].

μ2

[D].

1/μ2

Answer: Option B

Explanation:

No answer description available for this question.

Question: A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid.
[A].

Newtonion

[B].

Non-Newtonion

[C].

ideal

[D].

incompressible

Answer: Option A

Explanation:

No answer description available for this question.

Question: One horsepower is equal to
[A].

550 lbf.ft/second

[B].

550 kgf.m/second

[C].

both (a) and (b)

[D].

550 lbf.ft./hr

Answer: Option A

Explanation:

No answer description available for this question.

Question: __________ is an example of axial flow impeller.
[A].

Paddle

[B].

Turbine

[C].

Propeller

[D].

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

Answer: Option C

Explanation:

No answer description available for this question.

Question: Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.
[A].

1

[B].

10 .

[C].

40

[D].

70

Answer: Option B

Explanation:

No answer description available for this question.

Question: If Blausius or Darcey friction factor is ‘f1’ then the Fanning friction factor is equal to
[A].

f1/4

[B].

4f2

[C].

2f1

[D].

f1/2

Answer: Option A

Explanation:

No answer description available for this question.

Question: Experimental study of laminar fluid flow through a circular tube was conducted by
[A].

Reynolds

[B].

Hagen and Poiseuille

[C].

Pascal

[D].

Blake-Plummer

Answer: Option B

Explanation:

No answer description available for this question.