Understanding Automotive AC Systems

What is the primary function of the AC compressor in an automotive air conditioning system?

• To cool the refrigerant

• To compress and circulate the refrigerant

• To filter the refrigerant

• To heat the refrigerant

Which of the following is a common type of refrigerant used in modern automotive AC systems?

• R-12

• R-22

• R-134a

• R-410A

What is the role of the expansion valve in an automotive AC system?

• To increase the pressure of the refrigerant

• To convert refrigerant from liquid to gas

• To regulate the flow of refrigerant into the evaporator

• To cool the refrigerant

Which component of the automotive AC system is responsible for dissipating heat from the refrigerant?

• Compressor

• Condenser

• Evaporator

• Expansion valve

What is the primary function of the evaporator in an automotive AC system?

• To absorb heat from the vehicle's interior

• To compress the refrigerant

• To dissipate heat to the outside air

• To regulate refrigerant flow

Which of the following is a symptom of a failing AC compressor?

• Warm air blowing from the vents

• Excessive noise from the AC system

• Refrigerant leaks

• All of the above

What property of refrigerants makes them suitable for use in automotive AC systems?

• High boiling point

• Low thermal conductivity

• Ability to change state at low temperatures

• High viscosity

How does the condenser in an automotive AC system function?

• It compresses the refrigerant

• It converts refrigerant from gas to liquid

• It absorbs heat from the vehicle's interior

• It regulates refrigerant flow

Which of the following is a common method for troubleshooting an automotive AC system?

• Checking refrigerant levels

• Inspecting for leaks

• Testing electrical connections

• All of the above

What happens to the refrigerant as it passes through the expansion valve?

• It is compressed

• It absorbs heat

• It expands and cools

• It condenses