IndiaBIX

Chemical Engineering - Heat Transfer

Exercise : Heat Transfer - Section 7
31.
Unsteady state heat conduction occurs, when
temperature distribution is independent of time.
temperature distribution is dependent on time.
heat flows in one direction only.
three dimensional heat flow is concerned.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
What is the absorptivity of a black body ?
1
0
0.78
0.95
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Mode of heat transfer in which the fluid moves under the influence of changes in fluid pressure produced by external work is called
radiation
natural convection
forced convection
conduction
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
Baffle spacing
is not the same as baffle pitch.
should be less than one fifth the diameter of the shell.
should be less than the inside diameter of the shell.
none of these.
Answer: Option
Explanation:

The distance between the baffles is called baffle spacing. While the maximum baffle spacing is equal to the diameter of the shell, the minimum is l/5th the shell diameter.

35.
Boiling point elevation of a solution of NaOH
increases rapidly with temperature rise.
is almost independent of temperature.
is almost independent of pressure.
both (b) and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers