Aux 2 Unit 8 Quiz 1

Aux 2 Unit 8 Q1

1 / 8

What does the term "superheated" mean in the context of refrigeration?

A) The refrigerant is at its highest pressure point

B) The refrigerant is heated beyond its boiling point and remains a vapor

D) The refrigerant is at the saturation temperature but in a liquid state

C) The refrigerant is cooled below its freezing point

2 / 8

In a basic vapor compression refrigeration system, what happens to the refrigerant in the evaporator?

C) It releases heat and condenses into a liquid

D) It is sub-cooled to decrease temperature

B) It absorbs heat and evaporates, becoming superheated vapor

A) It is compressed to increase pressure

3 / 8

What is the state of the refrigerant as it exits the compressor in a vapor compression system?

D) Condensed liquid

A) Saturated vapor

C) Superheated vapor

B) Sub-cooled liquid

4 / 8

What does the term "sub-cooled" mean in a refrigeration system?

D) The refrigerant is in a gas phase

A) The refrigerant is at its boiling point and starts to evaporate

B) The refrigerant is heated above the saturation temperature

C) The refrigerant is cooled below its condensation temperature while remaining a liquid

5 / 8

What process takes place in the condenser of a vapor compression refrigeration system?

D) The refrigerant is converted directly into ice

C) The refrigerant absorbs heat and evaporates

A) The refrigerant is expanded to lower pressure

B) The refrigerant releases heat and condenses into a sub-cooled liquid

6 / 8

What is the purpose of the expansion valve in a basic vapor compression refrigeration system?

D) To ensure the refrigerant remains in a liquid state

C) To heat the refrigerant to its superheated state

B) To cool the refrigerant by reducing pressure, causing partial evaporation

A) To compress the refrigerant and increase its pressure

7 / 8

Where in the vapor compression system does the refrigerant become sub-cooled?

C) Inside the compressor

B) After leaving the condenser

D) Before entering the expansion valve

A) In the evaporator

8 / 8

What is the "saturation temperature" in a refrigeration system?

D) The temperature below which the refrigerant is sub-cooled

C) The temperature at which the refrigerant is fully superheated

A) The temperature at which the refrigerant begins to freeze

B) The temperature at which the refrigerant condenses or boils

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