Free BOC HVAC Systems and Controls Questions and Answers

Question 1

What is the primary function of an HVAC system?

Accepted Answer

Control temperature, humidity, and air quality

Answer

Enhance lighting efficiency

Answer

Improve electrical conductivity

Answer

Supply potable water

Question 2

Which component is responsible for moving air through a duct system?

Accepted Answer

Blower fan

Answer

Compressor

Answer

Evaporator

Answer

Thermostat

Question 3

What is the role of a thermostat in HVAC systems?

Accepted Answer

Regulate temperature by controlling the system

Answer

Measure humidity only

Answer

Supply refrigerant

Answer

Control water pressure

Question 4

Which type of HVAC system allows individual control of different building zones?

Accepted Answer

Zoned system

Answer

Centralized system

Answer

Split system

Answer

Packaged unit

Question 5

What does a Variable Air Volume (VAV) system do?

Accepted Answer

Vary airflow based on space requirements

Answer

Fix airflow regardless of demand

Answer

Maintain air pressure without cooling

Answer

Compress refrigerant only

Question 6

Which maintenance task improves HVAC system efficiency?

Accepted Answer

Replacing air filters regularly

Answer

Disabling the thermostat

Answer

Overloading the system

Answer

Closing all air vents