Refrigeration Quiz 601-1000

Why are automatic expansion valves (AEV) usually adjustable?

• for different condenser temperatures

• for different evaporator temperatures

• neither A or B

A capillary tube reduces pressure by resistance to the flow of

• liquid

• gas

• neither A or B

The purpose of a compressor is to move the evaporated gas to a

• low-temperature, low-pressure level

• high-temperature, high-pressure level

• neither A or B

Hermetic motors are usually cooled by

• water

• low temperature vapor

• oil

How many openings does a compressor service valve have?

• one

• two

• three

An oil separator removes oil from the

• low side

• discharge vapor

• neither A or B

A liquid line filter-drier is used to

What is the purpose of a filter drier?

• remove moisture from the low side

• remove dirt and moisture from the liquid refrigerant

• keep the compressor cool

Thermostatic expansion valve superheat is the temperature difference between the liquid refrigerant in the

• condenser and the evaporator temperature

• evaporator and the thermal bulb temperature

• neither A nor B

Except for ammonia systems, what is the most common expansion valve body material?

• copper

• steel

• brass