Air Distribution Systems

Which of the following is not a type of air distribution system?

• a) Gravity system

• b) Forced-air system

• c) Radiant system

• d) Conduction system

What is the purpose of an air distribution system in HVAC?

• a) To distribute fresh air throughout the building

• b) To circulate warm air in the summer

• c) To distribute conditioned air evenly throughout the building

• d) To remove excess humidity from the building

Which component is responsible for moving air through the ductwork?

• a) Diffuser

• b) Grille

• c) Air handler

• d) Damper

What is the most common material used for residential ductwork?

• a) Fiberglass

• b) Steel

• c) PVC

• d) Aluminum

Which of the following statements about air filters is true?

• a) Air filters should be replaced annually.

• b) Air filters only need to be cleaned if they are visibly dirty.

• c) Air filters should be replaced regularly to maintain system efficiency.

• d) Air filters are not necessary in air distribution systems.

Which of the following is a characteristic of a properly designed duct system?

• a) Uneven airflow distribution

• b) Excessive noise from the air vents

• c) Properly sized and sealed ducts

• d) High static pressure in the ducts

What is the purpose of a duct damper?

• a) To control the temperature of the air

• b) To prevent air leakage from the ducts

• c) To control the airflow direction

• d) To increase the system efficiency

Which of the following is an example of a supply air outlet?

• a) Return grille

• b) Air register

• c) Venturi nozzle

• d) Mixing box

What is the purpose of a diffuser in an air distribution system?

• a) To mix outside air with return air

• b) To remove airborne contaminants from the air

• c) To distribute air into the conditioned space

• d) To measure the velocity of the air

Which component is responsible for removing stale air from the building?

• a) Return grille

• b) Air register

• c) Venturi nozzle

• d) Mixing box