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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

depends on other factors
decreases
increases
remains same

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

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

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Refrigeration and Air Conditioning
In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is

Heated and humidified
Heated and dehumidified
Cooled and humidified
Cooled and dehumidified

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Refrigeration and Air Conditioning
A bootstrap air cooling system has

Three heat exchangers
Four heat exchangers
Two heat exchangers
One heat exchanger

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Refrigeration and Air Conditioning
During sensible cooling,

Partial pressure of vapour remains constant
Relative humidity remains constant
Specific humidity increases
Wet bulb temperature increases

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

Saturated liquid
Sub-cooled liquid
Wet vapour
Liquid

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MORE MCQ ON Refrigeration and Air Conditioning

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