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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The C.O.P. of a heat pump working on a reversed Carnot cycle is

T₂/(T₂ - T₁)
(T₂ - T₁)/T₁
(T₁ - T₂)/T₁
T₁/(T₂ - T₁)

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Refrigeration and Air Conditioning
The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)

(T₂ - T₁)/T₁
T₁ / (T₂ - T₁)
T₂/ (T₂ - T₁)
(T₁ - T₂)/T₁

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Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Domestic refrigerators
Commercial refrigerators
Air conditioning
Gas liquefaction

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Refrigeration and Air Conditioning
Pick up the wrong statement. A refrigerant should have

Higher critical temperature
High boiling point
High latent heat of vaporisation
Tow specific heat of liquid

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Specific humidity
Wet bulb temperature
Relative humidity
Dry bulb temperature

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Refrigeration and Air Conditioning
The freezing point of R-12 is

-95.2°C
-86.6°C
-135.8°C
-107.7°C

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MORE MCQ ON Refrigeration and Air Conditioning

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