Class II Exam — CA-II Practice Questions
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(Practice questions created to match the official exam scope
and difficulty level. Not taken from past papers.)
The Class II license is unrestricted and covers residential and
commercial conditioned air work, including installation, service,
repair, design, permitting, and related HVAC systems.
1. What is the primary purpose of a refrigeration system evaporator?
A. Reject heat to outdoor air
B. Compress refrigerant vapor
,C. Absorb heat from the conditioned space
D. Store liquid refrigerant
Answer: C. Absorb heat from the conditioned space
The evaporator absorbs heat as refrigerant changes from a low-pressure
liquid/vapor mixture into a vapor.
2. A Class II Conditioned Air Contractor license in Georgia is considered:
A. Residential only
B. Restricted to small systems
C. Unrestricted
D. Limited to service work only
Answer: C. Unrestricted
Class II contractors may perform unrestricted conditioned air contracting work
without the equipment size limitations of Class I.
3. The refrigeration compressor changes refrigerant from:
A. High-pressure liquid to low-pressure vapor
B. Low-pressure vapor to high-pressure vapor
C. High-pressure vapor to low-pressure liquid
D. Low-pressure liquid to high-pressure liquid
Answer: B. Low-pressure vapor to high-pressure vapor
The compressor raises refrigerant pressure and temperature by compressing
vapor.
4. Superheat is the temperature of:
,A. Liquid refrigerant above condensing temperature
B. Vapor refrigerant above its boiling temperature
C. Air above room temperature
D. Water above freezing temperature
Answer: B. Vapor refrigerant above its boiling temperature
Superheat confirms that refrigerant leaving the evaporator is vapor and helps
prevent compressor damage.
5. The condenser in an air-conditioning system:
A. Absorbs indoor heat
B. Removes moisture only
C. Rejects heat from refrigerant
D. Increases airflow
Answer: C. Rejects heat from refrigerant
The condenser releases absorbed heat to the outdoor environment.
6. The purpose of a metering device is to:
A. Increase compressor speed
B. Control refrigerant flow into the evaporator
C. Remove oil from refrigerant
D. Increase airflow
Answer: B. Control refrigerant flow into the evaporator
The metering device creates a pressure drop and regulates refrigerant entering
the evaporator.
7. A dirty air filter usually causes:
, A. Increased airflow
B. Reduced airflow
C. Higher voltage
D. Lower refrigerant pressure only
Answer: B. Reduced airflow
A restricted filter reduces air movement and can cause poor cooling performance
or coil freezing.
8. The purpose of a thermostat is to:
A. Measure refrigerant pressure
B. Control system operation based on temperature
C. Increase compressor capacity
D. Remove humidity mechanically
Answer: B. Control system operation based on temperature
The thermostat senses room conditions and signals heating or cooling
operation.
9. The sensible heat load affects:
A. Temperature only
B. Moisture only
C. Refrigerant charge only
D. Electrical resistance
Answer: A. Temperature only
Sensible heat changes temperature without changing moisture content.
10. Latent heat relates to: