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Refrigeration and Air Conditioning

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

5
1.2
0.2
6

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Refrigeration and Air Conditioning
The process, generally used in summer air conditioning to cool and dehumidify the air, is called

Cooling and dehumidification
Humidification
Heating and humidification
Dehumidification

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Refrigeration and Air Conditioning
In a refrigeration cycle, the flow of refrigerant is controlled by

Condenser
Compressor
Evaporator
Expansion valve

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant is dry saturated vapour

Before entering the compressor
Before entering the condenser
After leaving the condenser
After leaving the compressor

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

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

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Refrigeration and Air Conditioning
The leakage in a refrigeration system using ammonia is detected by

All of these
Soap and water
Sulphur sticks
Halide torch

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