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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Condensing temperature in a refrigerator is the temperature

Of evaporator
Of freezing zone
At which refrigerant gas becomes liquid
Of cooling medium

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Refrigeration and Air Conditioning
The coefficient of performance is the ratio of the refrigerant effect to the

Heat of compression
Work done by compressor
Enthalpy increase in compressor
All of these

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

Freon-22
Freon-12
CO2
NH3

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Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

6
1.2
0.2
5

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Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Air conditioning
Gas liquefaction
Commercial refrigerators
Domestic refrigerators

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Refrigeration and Air Conditioning
The specific humidity during humidification process

Increases
Decreases
None of these
Remains constant

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MORE MCQ ON Refrigeration and Air Conditioning

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