Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

46.
The critical radius is the insulation radius at which the resistance to heat flow is
maximum
minimum
zero
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

47.
In case of solids, the heat transfer takes place according to radiation.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.

48.
A water cooled condenser operates at a __________ condensing temperature than an air-cooled condenser.
higher
lower
Answer: Option
Explanation:
No answer description is available. Let's discuss.

49.
The relative humidity decreases as air gets wet.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

50.
The temperature of ammonia after compression in a vapour compression system is
20 to 50° C
50 to 70° C
70 to 110° C
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.