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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Condensation
Expansion
Compression
Evaporation

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

Increases C.O.P
Decreases C.O.P
Other factors decide C.O.P
O.P remains unaltered

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Refrigeration and Air Conditioning
In a vapour compression cycle, the refrigerant immediately after expansion valve is

Liquid
Sub-cooled liquid
Saturated liquid
Wet vapour

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

-95.2°C
-86.6°C
-107.7°C
-135.8°C

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible heating of air

Increases
Decreases
Remains constant
None of these

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Refrigeration and Air Conditioning
In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively

Water and lithium bromide
Ammonia and water
Water and water
Ammonia and lithium bromide

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MORE MCQ ON Refrigeration and Air Conditioning

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