CHEMICAL ENGINEERING

Question: Bernoulli’s equation is not applicable, when the flow is
[A].

irrotational.

[B].

incompressible.

[C].

viscous.

[D].

all (a), (b) & (c).

Answer: Option D

Explanation:

No answer description available for this question.

Question: In case of a __________ the energy of flow is considerably decreased downstream of the machine.
[A].

blower

[B].

turbine

[C].

centrifugal pump

[D].

centrifugal fan

Answer: Option B

Explanation:

No answer description available for this question.

Question: Capillary tube method of viscosity measurement is based on the
[A].

Hagen-Poiseulle’s equation

[B].

Stoke’s law

[C].

Navier-stokes equation

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Air vessel of a reciprocating pump is initially filled with
[A].

atmospheric air

[B].

compressed air

[C].

water

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Mach number is important in a fluid flow problem, when the inertia and __________ forces predominate.
[A].

elastic

[B].

viscous

[C].

gravity

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: A pressure head of 320 metres of water in meters of CCl4 (sp.gr = 1.6) will be
[A].

100

[B].

200

[C].

320

[D].

160

Answer: Option B

Explanation:

No answer description available for this question.

Question: Discharge in laminar flow through a pipe varies
[A].

as the square of the radius.

[B].

inversely as the pressure drop.

[C].

inversely as the viscosity.

[D].

as the square of the diameter.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Cp/Cv is termed as
[A].

adiabatic constant

[B].

Mach number

[C].

Weber number

[D].

Prandtl number

Answer: Option A

Explanation:

No answer description available for this question.

Question: For flow through an orifice from a reservoir, the actual velocity at the vena con-tracta is given by
[A].

2gh

[B].

C.V. 2gh

[C].

Cd 2gh

[D].

Cc 2gh

Answer: Option B

Explanation:

No answer description available for this question.

Question: In deriving Bernoulli’s equation, fluid is assumed to be
[A].

incompressible, frictionless, steady, along a streamline.

[B].

uniform, steady, incompressible, along a streamline.

[C].

steady, density being pressure dependent, frictionless.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.