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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During cooling and dehumidification, dry bulb temperature

Increases
None of these
Remains constant
Decreases

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Refrigeration and Air Conditioning
The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

25°C DBT and 100% RH
25°C DBT and 40% RH
22°C DBT and 60% RH
20°C DBT and 80% RH

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Refrigeration and Air Conditioning
Ammonia absorption refrigeration cycle requires

Zero work input
Very little work input
Nearly same work input as for vapour compression cycle
Maximum work input

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

Remains constant
None of these
Increases
Decreases

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

Dry bulb temperature
Wet bulb temperature
Relative humidity
Specific humidity

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Refrigeration and Air Conditioning
Air refrigerator works on

None of these
Bell Coleman cycle
Reversed Carnot cycle
Both (A) and (B)

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MORE MCQ ON Refrigeration and Air Conditioning

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