Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

11.
The final relative humidity of the air during cooling and dehumidification is generally __________ than that of entering air.
lower
higher
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
The emissivity of a polished silver body is __________ as compared to black body.
same
low
very low
high
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
In a pressure enthalpy chart, the space between the saturated liquid line and saturated vapour line, represents sub-cooled liquid region.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
R-11 has the highest critical point temperature.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
The ratio of heat extracted in the refrigerator to the workdone on the refrigerant is called
coefficient of performance of refrigeration
coefficient of performance of heat pump
relative coefficient of performance
refrigerating efficiency
Answer: Option
Explanation:
No answer description is available. Let's discuss.