CBCP CBCP Building Automation & Control Systems

Question 1

What is the primary function of a Building Automation System (BAS) in a commissioned facility?

Accepted Answer

Centralized monitoring and control of HVAC, lighting, and other building systems

Answer

Solely managing fire suppression systems

Answer

Providing security access control only

Answer

Tracking occupant attendance

Question 2

Which communication protocol is most widely used in modern BAS for interoperability between devices from different manufacturers?

Accepted Answer

BACnet

Answer

Modbus RTU

Answer

Profibus

Answer

CANbus

Question 3

During commissioning, what is a 'setpoint' in a BAS context?

Accepted Answer

The target value a control system attempts to maintain, such as 72°F room temperature

Answer

The maximum load a system can handle

Answer

The installation position of a sensor

Answer

The calibration offset applied to a transmitter

Question 4

What type of control loop continuously compares measured output to the setpoint and adjusts the control signal accordingly?

Accepted Answer

Closed-loop (feedback) control

Answer

Open-loop control

Answer

On/off control

Answer

Cascade control

Question 5

A DDC (Direct Digital Control) controller receives a 4–20 mA signal from a duct static pressure sensor. What does the 4 mA signal represent?

Accepted Answer

The minimum (zero) value of the measured range

Answer

50% of the measured range

Answer

The maximum pressure in the range

Answer

A fault condition

Question 6

During functional performance testing (FPT) of a BAS, a commissioning agent triggers an occupied mode override. What is the primary purpose of this test?

Accepted Answer

To verify the BAS correctly transitions systems to occupied setpoints and schedules

Answer

To test the fire alarm panel integration

Answer

To measure electrical panel voltage drop

Answer

To balance diffuser airflow