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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Degree of saturation
Dry bulb depression
Wet bulb depression
Dew point depression

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Refrigeration and Air Conditioning
Which of the following refrigerants has lowest freezing point?

CO2
Freon-12
Freon-22
NH3

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Refrigeration and Air Conditioning
The freezing point of sulphur dioxide is

-135.8°C
-77.7°C
-56.6°C
-75.2°C

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Refrigeration and Air Conditioning
The evolution of heat of solution takes place in ammonia absorption plant when

Ammonia vapour goes into solution
Weak solution mixes with strong solution
Lithium bromide mixes with ammonia
Ammonia vapour is driven out of solution

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

Liquid
Wet vapour
Saturated liquid
Sub-cooled liquid

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Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

Remains constant
None of these
Increases
Decreases

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MORE MCQ ON Refrigeration and Air Conditioning

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