Georgia Conditioned Air Contractor
Class II Examination Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. Which system component is primarily responsible for absorbing heat
from indoor air in a split air-conditioning system?
A. Condenser coil
B. Compressor
C. Evaporator coil
D. Expansion valve
Rationale: The evaporator coil absorbs heat from indoor air as
refrigerant evaporates inside it, providing cooling.
2. What type of refrigerant pressure is measured at the suction line of a
typical air-conditioning system?
A. Discharge pressure
B. Low-side pressure
C. Static pressure
D. Head pressure
Rationale: The suction line carries low-pressure vapor refrigerant
returning to the compressor.
3. The primary function of a compressor in a vapor-compression cycle is
to:
A. Absorb heat
B. Reject heat
C. Increase refrigerant pressure and temperature
, D. Meter refrigerant flow
Rationale: Compressors raise the pressure and temperature of
refrigerant vapor so heat can be rejected in the condenser.
4. What electrical device protects a motor from overheating due to
excessive current draw?
A. Contactor
B. Transformer
C. Overload protector
D. Relay
Rationale: Overload protectors interrupt power when excessive
current or heat is detected.
5. In Georgia, a Conditioned Air Contractor Class II license generally
allows work on systems up to:
A. 5 tons
B. 175 tons
C. Unlimited capacity
D. Residential only
Rationale: Class II licenses allow work on systems up to a specified
tonnage limit, commonly 175 tons.
6. What is the purpose of superheating refrigerant vapor leaving the
evaporator?
A. Increase system capacity
B. Reduce condenser pressure
C. Ensure only vapor enters the compressor
D. Cool the compressor motor
Rationale: Superheating prevents liquid refrigerant from entering the
compressor and causing damage.
7. Which duct material is most commonly used in residential HVAC
installations?
A. Copper
B. PVC
C. Galvanized steel
D. Cast iron
Rationale: Galvanized steel is durable, affordable, and commonly
used for residential ductwork.
, 8. What instrument is used to measure air velocity in ducts?
A. Hygrometer
B. Anemometer
C. Manometer
D. Thermistor
Rationale: Anemometers measure air velocity and airflow.
9. The term “SEER” refers to:
A. Seasonal Energy Efficiency Ratio
B. System Energy Efficiency Rating
C. Seasonal Energy Efficiency Ratio
D. Standard Energy Efficiency Requirement
Rationale: SEER measures cooling efficiency over an entire cooling
season.
10. Which type of heat transfer occurs through direct contact of
molecules?
A. Conduction
B. Convection
C. Radiation
D. Compression
Rationale: Conduction transfers heat through direct molecular
contact.
11. A clogged air filter will most likely cause:
A. Higher airflow
B. Lower static pressure
C. Reduced airflow and coil freezing
D. Increased system efficiency
Rationale: Restricted airflow reduces heat transfer and can cause
evaporator coil freezing.
12. What safety device shuts off gas flow if a pilot flame goes out?
A. Gas valve
B. Thermocouple
C. Limit switch
D. Draft inducer
Rationale: Thermocouples detect pilot flame heat and shut off gas if
the flame is lost.
Class II Examination Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which system component is primarily responsible for absorbing heat
from indoor air in a split air-conditioning system?
A. Condenser coil
B. Compressor
C. Evaporator coil
D. Expansion valve
Rationale: The evaporator coil absorbs heat from indoor air as
refrigerant evaporates inside it, providing cooling.
2. What type of refrigerant pressure is measured at the suction line of a
typical air-conditioning system?
A. Discharge pressure
B. Low-side pressure
C. Static pressure
D. Head pressure
Rationale: The suction line carries low-pressure vapor refrigerant
returning to the compressor.
3. The primary function of a compressor in a vapor-compression cycle is
to:
A. Absorb heat
B. Reject heat
C. Increase refrigerant pressure and temperature
, D. Meter refrigerant flow
Rationale: Compressors raise the pressure and temperature of
refrigerant vapor so heat can be rejected in the condenser.
4. What electrical device protects a motor from overheating due to
excessive current draw?
A. Contactor
B. Transformer
C. Overload protector
D. Relay
Rationale: Overload protectors interrupt power when excessive
current or heat is detected.
5. In Georgia, a Conditioned Air Contractor Class II license generally
allows work on systems up to:
A. 5 tons
B. 175 tons
C. Unlimited capacity
D. Residential only
Rationale: Class II licenses allow work on systems up to a specified
tonnage limit, commonly 175 tons.
6. What is the purpose of superheating refrigerant vapor leaving the
evaporator?
A. Increase system capacity
B. Reduce condenser pressure
C. Ensure only vapor enters the compressor
D. Cool the compressor motor
Rationale: Superheating prevents liquid refrigerant from entering the
compressor and causing damage.
7. Which duct material is most commonly used in residential HVAC
installations?
A. Copper
B. PVC
C. Galvanized steel
D. Cast iron
Rationale: Galvanized steel is durable, affordable, and commonly
used for residential ductwork.
, 8. What instrument is used to measure air velocity in ducts?
A. Hygrometer
B. Anemometer
C. Manometer
D. Thermistor
Rationale: Anemometers measure air velocity and airflow.
9. The term “SEER” refers to:
A. Seasonal Energy Efficiency Ratio
B. System Energy Efficiency Rating
C. Seasonal Energy Efficiency Ratio
D. Standard Energy Efficiency Requirement
Rationale: SEER measures cooling efficiency over an entire cooling
season.
10. Which type of heat transfer occurs through direct contact of
molecules?
A. Conduction
B. Convection
C. Radiation
D. Compression
Rationale: Conduction transfers heat through direct molecular
contact.
11. A clogged air filter will most likely cause:
A. Higher airflow
B. Lower static pressure
C. Reduced airflow and coil freezing
D. Increased system efficiency
Rationale: Restricted airflow reduces heat transfer and can cause
evaporator coil freezing.
12. What safety device shuts off gas flow if a pilot flame goes out?
A. Gas valve
B. Thermocouple
C. Limit switch
D. Draft inducer
Rationale: Thermocouples detect pilot flame heat and shut off gas if
the flame is lost.
