CSLB Class B General Contractor's License Practice Exam

An electronically actuated device that fits within the trunk or primary supply branch of an air distribution system is called a ___________________?

1. Zone control unit

2. Automated zone damper

3. Flow regulator

4. Supply fan

The correct answer is: Automated zone damper

An electronically actuated device that fits within the trunk or primary supply branch of an air distribution system is specifically referred to as an automated zone damper. This device is designed to control the flow of air within different zones of a building. By adjusting the damper position based on input signals from a thermostat or a central control system, the automated zone damper ensures that the appropriate amount of air reaches each zone, contributing to the overall efficiency and effectiveness of the heating, ventilation, and air conditioning (HVAC) system. Zone control units play a broader role by integrating multiple dampers and controls but are not solely defined as any one particular device within the air distribution system. Flow regulators adjust airflow but do not have the electronic control capability that characterizes automated zone dampers. Supply fans are components that help move air through the system, but they do not specifically manage air distribution between zones as automated dampers do. This clarity on functionality reinforces the role of the automated zone damper within an HVAC context.