Heat Transfer - Study Mode

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[#401] Which characteristic of a fluid is not important in deciding its route in a shell and tube heat exchanger?

(A) Corrosiveness

(B) Fouling characteristic

(C) Viscosity

(D) None of these

Correct Answer

(D) None of these

[#402] The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature)

(A) (ΔT) 2

(B) (ΔT) 4

(C) (ΔT) 3

(D) $$sqrt {Delta { ext{T}}} $$

Correct Answer

(C) (ΔT) 3

[#403] 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) Δt 2

(C) Δt 3

(D) $$sqrt {Delta { ext{t}}} $$

Correct Answer

(A) Δt

[#404] __________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side.

(A) Single pass, fixed tube sheet

(B) U-tube

(C) Three pass, fixed tube sheet

(D) None of these

Correct Answer

(B) U-tube

[#405] Which of the following has the highest thermal conductivity?

(A) Brick

(B) Air

(C) Water

(D) Silver

Correct Answer

(D) Silver