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. What is the primary function of a split-system air conditioner?
A. Heat water
B. Filter air
C. Cool indoor air
D. Ventilate building
Rationale: Split-system air conditioners use an indoor evaporator coil and an
outdoor condenser unit to remove heat from indoor air, effectively cooling the
space.
2. Which refrigerant has zero ozone depletion potential?
A. R-22
B. R-410A
C. R-12
D. R-502
Rationale: R-410A is a hydrofluorocarbon (HFC) with zero ozone depletion
potential, unlike R-22 and R-12.
, 3. What is the typical purpose of a condenser coil in an air
conditioning
system?
A. Absorb heat from indoor air
B. Release heat to the outside air
C. Evaporate refrigerant
D. Filter air
Rationale: The condenser coil transfers heat from the refrigerant to the
outside air, condensing it back to a liquid.
4. Which type of expansion device is most commonly used in
residential AC systems?
A. Capillary tube
B. Thermostatic expansion valve (TXV)
C. Electronic expansion valve
D. Check valve
Rationale: TXVs regulate refrigerant flow into the evaporator based on load,
improving system efficiency.
5. What safety device prevents excessive pressure buildup in an air
conditioning system?
A. Thermostat
B. Check valve
C. High-pressure switch
D. Expansion valve
Rationale: High-pressure switches shut down the system if pressures exceed
safe limits, protecting components.
6. What does SEER stand for in air conditioning systems?
A. Seasonal Energy Efficiency Rating
, B. Standard Energy Efficiency Ratio
C. Seasonal Energy Efficiency Ratio
D. Standard Evaporator Efficiency Rating
Rationale: SEER measures the cooling output per unit of electrical input over a
typical cooling season.
7. Which of the following is considered a duct leakage test method?
A. Visual inspection
B. Pressurization test
C. Thermocouple reading
D. Refrigerant gauge reading
Rationale: A pressurization test measures airflow escaping from ducts under
controlled conditions.
8. What is the primary function of the evaporator coil?
A. Compress refrigerant
B. Absorb heat from indoor air
C. Release heat outside
D. Filter air
Rationale: The evaporator coil allows refrigerant to absorb heat from indoor
air, cooling the air as it passes over the coil.
9. What is the typical voltage for a residential air conditioning
compressor?
A. 120V
B. 208V
C. 240V
D. 480V
Rationale: Most residential AC compressors operate on 240V single-phase
power.
Class II Examination Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. What is the primary function of a split-system air conditioner?
A. Heat water
B. Filter air
C. Cool indoor air
D. Ventilate building
Rationale: Split-system air conditioners use an indoor evaporator coil and an
outdoor condenser unit to remove heat from indoor air, effectively cooling the
space.
2. Which refrigerant has zero ozone depletion potential?
A. R-22
B. R-410A
C. R-12
D. R-502
Rationale: R-410A is a hydrofluorocarbon (HFC) with zero ozone depletion
potential, unlike R-22 and R-12.
, 3. What is the typical purpose of a condenser coil in an air
conditioning
system?
A. Absorb heat from indoor air
B. Release heat to the outside air
C. Evaporate refrigerant
D. Filter air
Rationale: The condenser coil transfers heat from the refrigerant to the
outside air, condensing it back to a liquid.
4. Which type of expansion device is most commonly used in
residential AC systems?
A. Capillary tube
B. Thermostatic expansion valve (TXV)
C. Electronic expansion valve
D. Check valve
Rationale: TXVs regulate refrigerant flow into the evaporator based on load,
improving system efficiency.
5. What safety device prevents excessive pressure buildup in an air
conditioning system?
A. Thermostat
B. Check valve
C. High-pressure switch
D. Expansion valve
Rationale: High-pressure switches shut down the system if pressures exceed
safe limits, protecting components.
6. What does SEER stand for in air conditioning systems?
A. Seasonal Energy Efficiency Rating
, B. Standard Energy Efficiency Ratio
C. Seasonal Energy Efficiency Ratio
D. Standard Evaporator Efficiency Rating
Rationale: SEER measures the cooling output per unit of electrical input over a
typical cooling season.
7. Which of the following is considered a duct leakage test method?
A. Visual inspection
B. Pressurization test
C. Thermocouple reading
D. Refrigerant gauge reading
Rationale: A pressurization test measures airflow escaping from ducts under
controlled conditions.
8. What is the primary function of the evaporator coil?
A. Compress refrigerant
B. Absorb heat from indoor air
C. Release heat outside
D. Filter air
Rationale: The evaporator coil allows refrigerant to absorb heat from indoor
air, cooling the air as it passes over the coil.
9. What is the typical voltage for a residential air conditioning
compressor?
A. 120V
B. 208V
C. 240V
D. 480V
Rationale: Most residential AC compressors operate on 240V single-phase
power.
