BTEB Refrigeration & AC Exam Practice Questions - BTEB National Skill Certificate - Refrigeration & Air Conditioning Exam

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What is the primary purpose of the expansion device (such as a capillary tube or thermostatic expansion valve) in a refrigeration system?

To reduce the pressure and temperature of the liquid refrigerant before it enters the evaporator To raise the pressure and temperature of refrigerant vapor leaving the evaporator To remove moisture and acid from the refrigerant before it reaches the compressor To reject heat from the refrigerant to the outside air

Correct Answer:

To reduce the pressure and temperature of the liquid refrigerant before it enters the evaporator

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