#1
Which refrigerant has been phased out due to its harmful impact on the ozone layer?
R-22
ExplanationR-22 has been phased out due to ozone layer depletion.
#2
What does HVAC stand for?
Heating, Ventilation, and Air Conditioning
ExplanationHVAC stands for Heating, Ventilation, and Air Conditioning.
#3
What does IAQ stand for in relation to HVAC systems?
Indoor Air Quality
ExplanationIAQ stands for Indoor Air Quality in relation to HVAC systems.
#4
What is the primary purpose of a humidifier in an HVAC system?
To increase humidity levels
ExplanationThe primary purpose of a humidifier in an HVAC system is to increase humidity levels.
#5
What does SEER stand for when referring to the efficiency of HVAC systems?
Seasonal Energy Efficiency Ratio
ExplanationSEER stands for Seasonal Energy Efficiency Ratio in reference to HVAC system efficiency.
#6
Which of the following pollutants is commonly controlled in HVAC systems?
Particulate Matter (PM)
ExplanationHVAC systems commonly control Particulate Matter (PM) pollutants.
#7
What does LEED certification stand for in the context of green building design?
Leadership in Energy and Environmental Design
ExplanationLEED stands for Leadership in Energy and Environmental Design in green building design context.
#8
What is the primary purpose of a MERV rating in HVAC systems?
To assess indoor air quality
ExplanationMERV rating in HVAC systems assesses indoor air quality.
#9
Which of the following is NOT a common type of HVAC system?
Thermal radiation system
ExplanationThermal radiation system is NOT a common type of HVAC system.
#10
What is the role of a condenser in an HVAC system?
To cool and condense refrigerant vapor into liquid
ExplanationThe condenser in an HVAC system cools and condenses refrigerant vapor into liquid.
#11
What is the purpose of an economizer in an HVAC system?
To reduce energy consumption by utilizing outdoor air when possible
ExplanationEconomizers in HVAC systems reduce energy consumption by using outdoor air when possible.
#12
What is a 'green roof' in the context of sustainable building design?
A roof covered with living vegetation
ExplanationA 'green roof' in sustainable building design context is covered with living vegetation.
#13
What is the purpose of a VAV (Variable Air Volume) system in HVAC?
To control air flow based on varying temperature requirements
ExplanationVAV (Variable Air Volume) system in HVAC controls air flow based on varying temperature requirements.
#14
What is the purpose of a heat exchanger in an HVAC system?
To transfer heat between two fluids
ExplanationThe purpose of a heat exchanger in an HVAC system is to transfer heat between two fluids.
#15
What is the purpose of a UV-C light system in HVAC units?
To enhance air filtration by killing microbial contaminants
ExplanationUV-C light systems in HVAC units enhance air filtration by killing microbial contaminants.