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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During adiabatic saturation process on unsaturated air ___ remains constant.

Dew point temperature
Wet bulb temperature
Dry bulb temperature
Relative humidity

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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)

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

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Refrigeration and Air Conditioning
The process, generally used in winter air-conditioning to warm and humidity the air, is called

Humidification
Cooling and dehumidification
Heating and humidification
Dehumidification

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Refrigeration and Air Conditioning
A standard ice point temperature corresponds to the temperature of

Mixture of ice and water under equilibrium conditions
Ice at 4°C
Solid and dry ice
Water at 0°C

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Refrigeration and Air Conditioning
Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

1: 1
1: 9
1: 3
9: 1

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Refrigeration and Air Conditioning
One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice

In 12 hours
In 24 hours
In 1 hour
In 1 minute

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MORE MCQ ON Refrigeration and Air Conditioning

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