Author name: admin

Question: A graph between __________ is called Wilson plot.
[A].

[B].

[C].

v0.8 Vs . U

[D].

Answer: Option A

Explanation:

No answer description available for this question.

Question: h.D/K is called the __________ number.
[A].

Nusselt

[B].

Peclet

[C].

Rayleigh

[D].

Grashoff

Answer: Option A

Explanation:

No answer description available for this question.

Question: Convective heat transfer, in which heat is transferred by movement of warmed matter is described by
[A].

Fourier’s law

[B].

Newton’s law of cooling

[C].

Fick’s law

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: While the total emissivity of a perfect black body is unity, the same for a real body is
[A].

0

[B].

1

[C].

> 1

[D].

between 0 and 1

Answer: Option D

Explanation:

No answer description available for this question.

Question: is termed as the __________ number.
[A].

Grashoff

[B].

Nusselt

[C].

Prandtl

[D].

Stanton

Answer: Option C

Explanation:

No answer description available for this question.

Question: For small temperature difference, the heat transfer rate as per Newton’s law of cooling is proportional to (where, Δt = excess temperature)
[A].

Δt

[B].

Δt2

[C].

Δt3

[D].

Δt

Answer: Option A

Explanation:

No answer description available for this question.

Question: In the free convection regime of pool boiling, the heat flux is proportional to
[A].

Δt1/2

[B].

Δt2

[C].

Δt5/4

[D].

Δt

Answer: Option C

Explanation:

No answer description available for this question.

Question: For a multipass shell and tube heat exchanger, the LMTD correction factor is always
[A].

1

[B].

> 1

[C].

< 1

[D].

between 1 & 2

Answer: Option C

Explanation:

No answer description available for this question.