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Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

Exercise : Heat Transfer, Refrigeration and Air Conditioning - Section 5
21.
The cooling system used for supersonic aircrafts and rockets is
simple air cooling system
boot-strap air cooling system
reduced ambient air cooling system
regenerative air cooling system
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Which of the following statement is correct?
In vapour absorption refrigerator, the compression of refrigerent is avoided.
Sub-cooling can be achieved by circulating more quantity of cooling water through the condenser.
In vapour compression refrigeration, the vapour is drawn in the compressor cylinder during its suction stroke and is compressed adiabatically during the compression stroke.
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The desirable property of a refrigerant is
low boiling point
high critical temperature
high latent heat of vaporisation
all of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
The humidification process, on the psychrometric chart is shown by
horizontal line
vertical line
inclined line
curved line
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The colour of the flame of halide torch, in case of leakage of freon refrigerant, will change to
bright green
yellow
red
orange
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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