#1
Which refrigerant is commonly used in residential air conditioning systems?
#2
What is the purpose of an evaporator coil in an air conditioning system?
To compress refrigerant
To absorb heat from indoor air
To release heat to the atmosphere
To regulate airflow
#3
In HVAC design, what is the role of a psychrometric chart?
To calculate electrical load
To analyze air pressure
To study the properties of moist air
To determine refrigerant levels
#4
Which HVAC system is known for its zoning capabilities, allowing different areas to have individual temperature control?
Window air conditioner
Central heating
Variable Refrigerant Flow (VRF) system
Hydronic heating system
#5
What is the purpose of a thermostatic expansion valve (TXV) in an HVAC system?
To control the flow of refrigerant into the evaporator coil
To regulate air pressure
To monitor temperature changes
To compress refrigerant
#6
What does HVACR stand for?
Heating, Ventilation, and Air Conditioning Regulation
High Voltage Alternating Current Relay
Hot Vapor Air Compression Reactor
Heat Ventilation and Cooling Radiator
#7
Which professional association is known for setting standards in the HVACR industry?
#8
Which HVAC system is most commonly used in large commercial buildings and skyscrapers?
Split-system
VRF system
Chilled beam system
Packaged rooftop unit
#9
What does SEER stand for in the context of air conditioning systems?
Seasonal Energy Efficiency Ratio
Systematic Energy Efficiency Report
Solar Energy Extraction Rate
Sensible Energy Efficiency Rating
#10
Which HVAC component is responsible for distributing conditioned air throughout a building?
Condenser
Air handler
Thermostat
Compressor
#11
What is the purpose of a damper in an HVAC system?
To control the flow of refrigerant
To regulate airflow
To monitor temperature
To generate electricity
#12
What is the primary purpose of a condensate drain line in an HVAC system?
To release excess refrigerant
To drain condensed water from the evaporator coil
To control airflow
To monitor temperature changes
#13
What is the primary function of a heat pump in HVAC systems?
To cool indoor air
To extract heat from indoor air and transfer it outside
To increase humidity levels
To circulate refrigerant
#14
Which refrigerant is classified as a hydrochlorofluorocarbon (HCFC)?
#15
Which refrigerant is commonly used in automotive air conditioning systems?
#16
What is the purpose of a desiccant wheel in an HVAC system?
To filter indoor air
To regulate refrigerant flow
To absorb moisture from the air
To control thermostat settings
#17
Which refrigerant is known for its low global warming potential (GWP)?
#18
What is the primary function of a compressor in an air conditioning system?
To release heat to the atmosphere
To circulate refrigerant
To absorb heat from indoor air
To control humidity levels
#19
In HVAC systems, what does the term 'Economizer' refer to?
A device to minimize energy consumption
A component to regulate humidity
A type of refrigerant
A unit to control ventilation