Chapter 63 Air Conditioning Quiz

Technician A says that heat is measured in degrees. Technician B says that temperature is measured in degrees. Which technician is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

Hot coolant is circulated through the ________ to warm the vehicle interior.

• radiator

• heater core

• condenser

• evaporator

Where in the air-conditioning system is the refrigerant a low-pressure gas?

• Compressor

• Condenser

• Evaporator

• Expansion valve

Where in the air-conditioning system is the refrigerant a high-pressure liquid?

• Compressor

• Condenser

• Evaporator

• Expansion valve

The compressor operates continuously with which type of system controls?

• Thermostatic expansion valve

• Cycling clutch

• Variable displacement

• Fixed displacement

Technician A says that all HFC-134a uses the same refrigerant oil. Technician B says that refrigerant oil, regardless of type, must be kept in a sealed container to keep it from absorbing moisture from the air. Which technician is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

A thermal expansion valve has a ________ orifice, whereas an orifice tube uses a ________ orifice to control refrigerant flow.

• fixed, variable

• variable, fixed

• large, small

• small, large

Water is observed dripping out from beneath the evaporator. Technician A says that is normal. Technician B says that the evaporator housing is defective and should be replaced. Which technician is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

The material used to absorb moisture from inside the air-conditioning system is called?

• Desiccant

• Coolant

• Lubricant

• Solvent

R-1234yf refrigerant is slightly flammable. Because of this, if the evaporator is damaged, it must be replaced with a ________ evaporator.

• standard

• reinforced

• non-flammable

• hermetically sealed