According to Stefan-Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the

Byadmin September 14, 2022

Question: According to Stefan-Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the
[A].

absolute temperature

[B].

square of the absolute temperature

[C].

cube of the absolute temperature

[D].

fourth power of the absolute temperature

Answer: Option D

Explanation:

No answer description available for this question.

Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated with rubber (k = 0.15 W/mK). The cable is to be located in air (h = 6 W/m2). The critical thickness of insulation will be

Question: An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated with rubber (k = 0.15 W/mK). The cable is to be located in air (h = 6 W/m2). The critical thickness of insulation will be
[A].

25 mm
[B].
40 mm
[C].
160 mm
[D].
800 mm

Answer: Option A

Explanation:

No answer description available for this question.

Read More An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated with rubber (k = 0.15 W/mK). The cable is to be located in air (h = 6 W/m2). The critical thickness of insulation will be
Engineering Mechanics | Mechanical Engineering

The angle which the normal reaction makes with the resultant reaction is called angle of friction.

Question: The angle which the normal reaction makes with the resultant reaction is called angle of friction.
[A].

Agree
[B].
Disagree

Answer: Option A

Explanation:

No answer description available for this question.

Read More The angle which the normal reaction makes with the resultant reaction is called angle of friction.
CHEMICAL ENGINEERING | Heat Transfer

All analogy equations connecting friction factor and heat transfer co-efficient apply only to

Question: All analogy equations connecting friction factor and heat transfer co-efficient apply only to
[A].

wall or skin friction
[B].
form friction
[C].
both (a) and (b)
[D].
turbulent flow

Answer: Option A

Explanation:

No answer description available for this question.

Read More All analogy equations connecting friction factor and heat transfer co-efficient apply only to
CHEMICAL ENGINEERING | Heat Transfer

Multiple effect evaporation accounts for

Question: Multiple effect evaporation accounts for
[A].

steam economy
[B].
lower operating costs
[C].
investment economy
[D].
none of these

Answer: Option A

Explanation:

No answer description available for this question.

Read More Multiple effect evaporation accounts for
CHEMICAL ENGINEERING | Heat Transfer

(NGr x NPr) is called the __________ number.

Question: (NGr x NPr) is called the __________ number.
[A].

Graetz
[B].
Reyleigh
[C].
Nusselt
[D].
Stanton

Answer: Option B

Explanation:

No answer description available for this question.

Read More (NGr x NPr) is called the __________ number.
Industrial Engineering And Production Management | Mechanical Engineering

Which of the following wage incentive plan is applied to all workers?

Question: Which of the following wage incentive plan is applied to all workers?
[A].

Halsey plan
[B].
Gantt plan
[C].
Emerson’s efficiency plan
[D].
Rowan plan

Answer: Option A

Explanation:

No answer description available for this question.

Read More Which of the following wage incentive plan is applied to all workers?

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