Mho’s scale of hardness, which consists of 10 standard minerals is used for the measurement of __________ hardness.

Question: Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is
[A].

thin walled having the value of Ao Ai/< 2.

[B].

thick walled.

[C].

having the value of Ao/Ai > 2.

[D].

both (b) and (c).

Answer: Option A

Explanation:

No answer description available for this question.

Question: In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used
[A].

in low range of temperature differences.

[B].

in high range of temperature differences.

[C].

because of its low cost.

[D].

to prevent corrosion of the tube bundles.

Answer: Option B

Explanation:

No answer description available for this question.