Refrigeration and Air Conditioning Quiz

What are the properties of air that affect air distribution system design or installation?

• All of the above

• Manner in which air absorbs heat

• Weight of air

• Air separation into layers

What are the basic types of air duct systems?

• Round ducts

• Square ducts

• All of the above

• Rectangular ducts

What is the purpose of an air curtain?

• All of the above

• To stop flow of conditioned air out

• To direct air across an opening

• To block infiltration of outside air

What is the purpose of a fire damper?

• To stop flow of conditioned air out

• To block infiltration of outside air

• To close automatically on detection of heat

• All of the above

What is the purpose of a damper in a forced-air system?

• To control temperature

• All of the above

• To balance airflow

• To allow or stop airflow

What is the purpose of a whole house fan?

• To provide free cooling

• To manage indoor temperature

• To blow out hot air and draw in cool air

• All of the above

What is the purpose of a heat recovery ventilator (HRV)?

• All of the above

• To provide energy recovery

• To control fresh-air intake

• To maintain positive pressure

What is the purpose of a fresh air damper?

• To provide energy recovery

• To maintain positive pressure

• To control fresh-air intake

• All of the above

What is the purpose of a gravity circulation system?

• To circulate warm air

• To circulate cool air

• All of the above

• To circulate air intermittently

What is the purpose of a variable speed blower in an air circulation system?

• To vary airflow

• To adjust temperature

• All of the above

• To control humidity