CBCP Building Automation & Control Systems Flashcards
6 cards from real CBCP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CBCP Building Automation & Control Systems flashcards as text
During BAS commissioning, what is 'sensor calibration verification' intended to confirm?
Answer: That sensor readings match known reference values within acceptable tolerances
Calibration verification ensures sensor readings are accurate and within specified tolerances compared to a calibrated reference instrument.
A BAS alarm is generated for 'high duct static pressure.' What is the most likely cause during normal operation?
Answer: A failed supply fan VFD running at 100% speed with dampers partially closed
High duct static pressure typically results from the supply fan running too fast relative to the open damper positions, causing pressure buildup.
What does the commissioning process step 'Issues Log' capture?
Answer: A record of all deficiencies, discrepancies, and unresolved items found during commissioning activities
The issues log (or deficiency log) tracks every problem found during commissioning, its status, and resolution, providing accountability.
Which type of BAS sensor measures the difference in pressure between two points to determine airflow?
Answer: Differential pressure (DP) transmitter
A differential pressure transmitter measures the pressure drop across flow elements like Pitot tubes or flow stations to calculate airflow.
In BAS programming, what is a 'PID controller' used for?
Answer: Providing proportional-integral-derivative control to minimize process error and achieve stable setpoint tracking
A PID controller minimizes error between setpoint and measured value using proportional, integral, and derivative terms for stable, accurate control.
What is the significance of 'Owner's Project Requirements (OPR)' in the commissioning process?
Answer: It defines the owner's functional, operational, and performance expectations that all commissioned systems must meet
The OPR is the foundational commissioning document that defines what the building systems must achieve, guiding all testing and verification activities.