Chemical Engineering - Heat Transfer

41.
Mechanical recompression evaporation is used in the production of
alcohol
distilled water
salt
fruits jam
Answer: Option
Explanation:
No answer description is available. Let's discuss.

42.
A measure of the extent to which viscous heating is important relative to the heat flow resulting from the impressed temperature difference is represented by the __________ number.
Condensation
Grashoff
Stantan
Brinkman
Answer: Option
Explanation:
No answer description is available. Let's discuss.

43.
Out of 100 kcal/second of incident radiant energy on the surface of a thermally transparent body, 300 kcal/second is reflected back. If the transmissivity of the body is 0.25, the emissivity of the surface will be
0.35
0.45
0.55
0.85
Answer: Option
Explanation:
No answer description is available. Let's discuss.

44.
The purpose of providing a 'catchall' in the vapor line of an evaporator is to
create vacuum
regulate the vapor flow
vent the non-condensible gases
arrest the entrained liquid
Answer: Option
Explanation:
No answer description is available. Let's discuss.

45.
What is the thermal conductivity of a perfect heat insulator ?
zero
one
between 0 and ∞
Answer: Option
Explanation:
No answer description is available. Let's discuss.