Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

11.
During sensible cooling of air, specific humidity
remains constant
increases
decreases
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
The transfer of heat by molecular collision is known as
conduction
convection
radiation
none of these
Answer: Option
Explanation:
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13.
When tc1 and tc2 are the temperatures of cold fluid at entry and exit respectively and th1 and th2 are the temperatures of hot fluid at entry and exit point, and cold fluid has lower heat capacity rate as compared to hot fluid, then effectiveness of the heat exchanger is given by
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
In a psychrometric chart, specific humidity (moisture content) lines are
vertical and uniformly spaced
horizontal and uniformly spaced
horizontal and non-uniformly spaced
curved lines
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
The expression Q = ρ AT4 is called
Fourier equation
Stefan-Boltzmann equation
Newton-Rikhmann equation
Joseph-Stefan equation
Answer: Option
Explanation:
No answer description is available. Let's discuss.