Exercise: Heat Transfer Refrigeration And Air Conditioning

Questions for: Heat Transfer Refrigeration And Air Conditioning

The sulphur sticks, in case of leakage of ammonia refrigerant, gives white smoke.
A:
True
B:
False
C:
D:
Answer: A
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The coefficient of performance of electrolux refrigerator is the ratio of
A:
heat supplied by the gas burner to the heat absorbed by the evaporator
B:
heat absorbed by the evaporator to the heat supplied by the gas burner
C:
heat supplied by the gas burner minus the heat absorbed by the evaporator to the heat supplied by the gas burner
D:
heat absorbed by the evaporator minus the heat supplied by the gas burner to the heat absorbed by the evaporator
Answer: B
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During cooling and dehumidification, dry bulb temperature
A:
remains constant
B:
increases
C:
decreases
D:
Answer: C
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The sensible heat gain is due to the __________ difference between the fresh air and the air in space.
A:
temperature
B:
humidity
C:
D:
Answer: A
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The horizontal and uniformly spaced lines on a psychrometric chart indicates relative humidity.
A:
Correct
B:
Incorrect
C:
D:
Answer: B
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