BOC BOC Building Automation and Controls

Question 1

What does BAS stand for in building operations?

Accepted Answer

Building Automation System

Answer

Building Audit System

Answer

Boiler Activation Sequence

Answer

Building Assessment Standard

Question 2

In a BAS, what does a DDC controller stand for?

Accepted Answer

Direct Digital Control

Answer

Dual Device Controller

Answer

Distributed Data Command

Answer

Dynamic Demand Circuit

Question 3

What is the role of a sensor's 'setpoint' in a BAS control loop?

Accepted Answer

The desired target value the control system works to achieve and maintain

Answer

The maximum voltage the sensor can handle

Answer

The calibration offset applied to raw sensor data

Answer

The frequency at which the sensor transmits data

Question 4

Which control strategy modulates equipment output proportionally to the difference between the measured value and the setpoint?

Accepted Answer

Proportional control

Answer

On/off (two-position) control

Answer

Time-of-day scheduling

Answer

Duty cycling

Question 5

What is 'proportional-integral-derivative' (PID) control used for in building systems?

Accepted Answer

Precisely controlling a variable by combining proportional, accumulated error, and rate-of-change corrections

Answer

Scheduling equipment on/off by time of day

Answer

Programming occupancy sensors to dim lights

Answer

Sequencing multiple chillers based on load

Question 6

In a BAS, what does the term 'trend log' refer to?

Accepted Answer

A time-stamped record of a sensor or control point value over time

Answer

A list of alarm events sorted by severity

Answer

A maintenance schedule for field devices

Answer

A log of failed network communications