#1
Which refrigerant is commonly used in modern air conditioning systems?
R-410A
ExplanationR-410A is a common refrigerant due to its non-ozone-depleting properties.
#2
What is the purpose of an evaporator in an air conditioning system?
To remove heat from the indoor air
ExplanationThe evaporator removes heat from indoor air, cooling it before circulating it back into the space.
#3
What is the purpose of a duct in a ducted air conditioning system?
To distribute conditioned air throughout the building
ExplanationDucts transport conditioned air from the central unit to various rooms in the building.
#4
What is the primary purpose of the fan in an air conditioning system?
To circulate air over the evaporator coil
ExplanationThe fan facilitates the transfer of heat by blowing indoor air over the evaporator coil.
#5
What is the purpose of the refrigerant in an air conditioning system?
To absorb and release heat
ExplanationRefrigerant absorbs heat from indoor air at the evaporator coil and releases it at the condenser coil.
#6
Which of the following is NOT a type of air conditioning system?
Direct current air conditioning
ExplanationDirect current air conditioning is not a recognized type of air conditioning system.
#7
What is the function of a compressor in an air conditioning system?
To increase the pressure of the refrigerant
ExplanationThe compressor pressurizes the refrigerant, facilitating its movement through the system.
#8
What is the purpose of a condenser in an air conditioning system?
To remove heat from the refrigerant
ExplanationThe condenser releases heat absorbed from indoor air, allowing the refrigerant to cool and condense.
#9
Which of the following refrigerants has been phased out due to its ozone-depleting potential?
R-22
ExplanationR-22 has been phased out due to its harmful impact on the ozone layer.
#10
Which of the following is a common type of air filter used in air conditioning systems?
Fiberglass filter
ExplanationFiberglass filters are commonly used in air conditioning systems to trap dust and particles from circulating air.
#11
What does SEER stand for in the context of air conditioning systems?
Seasonal Energy Efficiency Ratio
ExplanationSEER measures the energy efficiency of air conditioners over a typical cooling season.
#12
What is the function of an expansion valve in an air conditioning system?
To control the flow of refrigerant
ExplanationThe expansion valve regulates the flow of refrigerant into the evaporator, controlling the cooling process.
#13
What is the typical lifespan of a well-maintained air conditioning system?
10-15 years
ExplanationWith proper maintenance, air conditioning systems can typically last between 10 to 15 years.
#14
Which component of an air conditioning system is responsible for removing excess moisture from the air?
Evaporator coil
ExplanationThe evaporator coil aids in dehumidification by extracting moisture from the air as it cools.
#15
What is the purpose of a blower motor in an air conditioning system?
To regulate airflow
ExplanationThe blower motor controls the speed and direction of airflow, ensuring proper distribution of conditioned air.