Exercise: Heat Transfer Refrigeration And Air Conditioning

Questions for: Heat Transfer Refrigeration And Air Conditioning

The expression is used for calculating relative humidity.
A:
Yes
B:
No
C:
D:
Answer: B
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During sub-cooling, sensible heat from a liquid refrigerant is removed.
A:
Yes
B:
No
C:
D:
Answer: A
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The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed to the air, is called
A:
wet bulb temperature
B:
dry bulb temperature
C:
dew point temperature
D:
none of these
Answer: A
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R-12 is generally preferred over R-22 in deep freezers since
A:
it has low operating pressures
B:
it gives higher coefficient of performance
C:
it is miscible with oil over large range of temperatures
D:
all of the above
Answer: C
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Emissivity of a body will be equal to its absorptivity at all temperatures.
A:
Yes
B:
No
C:
D:
Answer: B
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