Exercise: Heat Transfer Refrigeration And Air Conditioning

Questions for: Heat Transfer Refrigeration And Air Conditioning

A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as
A:
B:
C:
AU Cmin
D:
Answer: D
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The transfer of heat from one body to another takes place only when there is a temperature difference between the bodies.
A:
Yes
B:
No
C:
D:
Answer: A
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Sulphur dioxide is extremely toxic and non-flammable.
A:
True
B:
False
C:
D:
Answer: A
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Bell-Coleman cycle is a
A:
reversed Carnot cycle
B:
reversed Otto cycle
C:
reversed Joule cycle
D:
reversed Rankine cycle
Answer: C
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At 100% relative humidity, wet bulb temperature, dry bulb temperature, dew point temperature and saturation temperature are equal.
A:
Correct
B:
Incorrect
C:
D:
Answer: A
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