Aux 2 Unit 10 Quiz 4

Correct Answer:
B) Low-pressure vapor

Explanation:
As the refrigerant absorbs heat in the evaporator, it changes from a low-pressure liquid to a low-pressure vapor.

Correct Answer:
B) Its pressure and temperature increase

Explanation:
The compressor increases the pressure and temperature of the refrigerant as it compresses the low-pressure vapor into a high-pressure vapor.

Correct Answer:
B) To transfer heat from a low-temperature region to a high-temperature region

Explanation:
The main purpose of the vapour-compression refrigeration cycle is to absorb heat from the evaporator (low-temperature region) and release it to the condenser (high-temperature region), effectively cooling the evaporated space.

Correct Answer:
C) High-pressure vapor

Explanation:
After leaving the compressor, the refrigerant is in a high-pressure vapor state due to the compression process.

Correct Answer:
C) To change from a vapor to a liquid state

Explanation:
The refrigerant releases heat in the condenser to condense from a high-pressure vapor to a high-pressure liquid.

Correct Answer:
C) High-pressure liquid

Explanation:
The refrigerant exits the condenser as a high-pressure liquid after releasing heat and condensing from a high-pressure vapor.

Correct Answer:
C) Low-pressure liquid-vapor mixture

Explanation:
After passing through the expansion valve, the refrigerant is in a low-pressure, partially vaporized state, preparing it for heat absorption in the evaporator.

Correct Answer:
B) To lower the pressure of the refrigerant and regulate its flow

Explanation:
The expansion valve reduces the pressure of the high-pressure liquid refrigerant and regulates its flow into the evaporator.

Correct Answer:
C) Low-pressure liquid

Explanation:
The refrigerant enters the evaporator as a low-pressure liquid and absorbs heat to change into a low-pressure vapor.