Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

6.
A boot-strap air cooling system has
one heat exchanger
two heat exchangers
three heat exchangers
four heat exchangers
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
The boiling point of __________ is -10.5°C.
ammonia
R-12
sulphur dioxide
carbon dioxide
Answer: Option
Explanation:
No answer description is available. Let's discuss.

8.
One tonne of refrigeration (1TR) means that the heat removing capacity is
21 kJ/min
210 kJ/min
420 kJ/min
620 kJ/min
Answer: Option
Explanation:
No answer description is available. Let's discuss.

9.
The operating pressure for refrigerating units using R-12 as a refrigerant is
2 bar
8 bar
15 bar
30 bar
Answer: Option
Explanation:
No answer description is available. Let's discuss.

10.
The specific humidity during heating and humidification process.
remains constant
increases
decreases
Answer: Option
Explanation:
No answer description is available. Let's discuss.