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Refrigeration and Air Conditioning

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

Liquid
Sub-cooled liquid
Wet vapour
Saturated liquid

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Refrigeration and Air Conditioning
In a domestic vapour compression refrigerator, the refrigerant commonly used is

CO?
All of these
R-12
Ammonia

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

Heating and humidification
Dehumidification
Humidification
Cooling and dehumidification

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Refrigeration and Air Conditioning
Moisture in Freon refrigeration system causes

Ineffective refrigeration
Freezing automatic regulating valve
High power consumption
Corrosion of whole system

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

Expansion valve
Evaporator
Compressor
Condenser

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

Lowers compressor capacity because vapour is lighter
Increases power required per ton of refrigeration
All of these
Lowers evaporation temperature

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MORE MCQ ON Refrigeration and Air Conditioning

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