CHEMICAL ENGINEERING | Chemical Engineering Basics

Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be

Byadmin August 3, 2022

Question: Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be
[A].

9.5:1

[B].

12.5:1

[C].

15.5 :1

[D].

18.5 : 1

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Heat Transfer

For flow over a flat plate, the ratio of thermal boundary layer thickness, ‘xt’ and hydrodynamic boundary layer thickness ‘x’ is equal to (where, NPr = Prandtl number)

Question: For flow over a flat plate, the ratio of thermal boundary layer thickness, ‘xt’ and hydrodynamic boundary layer thickness ‘x’ is equal to (where, NPr = Prandtl number)
[A].

NPr
[B].
NPr1/3
[C].
NPr-1
[D].
NPr-1/3

Answer: Option B

Explanation:

No answer description available for this question.

Read More For flow over a flat plate, the ratio of thermal boundary layer thickness, ‘xt’ and hydrodynamic boundary layer thickness ‘x’ is equal to (where, NPr = Prandtl number)
CHEMICAL ENGINEERING | Chemical Process

Bakelite is

Question: Bakelite is
[A].

same as poly tetrafluoroethylene (PTFE).
[B].
an inorganic polymer.
[C].
same as thermosetting phenol-formaldehyde.
[D].
not a polymer.

Answer: Option C

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Chemical Engineering Basics

Drills are usually made of

Question: Drills are usually made of
[A].

cermets
[B].
high speed steel
[C].
alloy steel
[D].
tungsten carbide

Answer: Option B

Explanation:

No answer description available for this question.

Read More Drills are usually made of
CHEMICAL ENGINEERING | Chemical Engineering Basics

The bulk modulus of a material with Poisson’s ratio of 0.5 is equal to

Question: The bulk modulus of a material with Poisson’s ratio of 0.5 is equal to
[A].

3 x Young’s modulus
[B].
Young’s modulus
[C].
infinity
[D].
zero

Answer: Option C

Explanation:

No answer description available for this question.

Read More The bulk modulus of a material with Poisson’s ratio of 0.5 is equal to
CHEMICAL ENGINEERING | Chemical Engineering Basics

In multipass welds, shot peening is done after each pass to

Question: In multipass welds, shot peening is done after each pass to
[A].

close the surface porosity.
[B].
break the continuity of columnar grains.
[C].
flatten the weldment.
[D].
introduce texture in the weld.

Answer: Option A

Explanation:

No answer description available for this question.

Read More In multipass welds, shot peening is done after each pass to
CHEMICAL ENGINEERING | Heat Transfer

For a laminar flow of fluid in a circular tube, ‘h1’ is the convective heat transfer co-efficient at velocity ‘V1’. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is

Question: For a laminar flow of fluid in a circular tube, ‘h1’ is the convective heat transfer co-efficient at velocity ‘V1’. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is
[A].

1.26 h1
[B].
0.794 h1
[C].
0.574 h1
[D].
1.741 h1

Answer: Option B

Explanation:

No answer description available for this question.

Read More For a laminar flow of fluid in a circular tube, ‘h1’ is the convective heat transfer co-efficient at velocity ‘V1’. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is

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