Building Automation and Control
Systems 2025/2026 Exam Questions and
Answers | A+ Score Assured
Energy Management Strategy - 🧠ANSWER ✔✔- Goal: highest level of
service and comfort while operating within very constrained budget limits
- Strong financial incentives
- Must be accomplished without sacrificing comfort and safety
- Energy Management Control Systems (EMCS) can play a key roll in
meeting these challenges
Basic Controls - 🧠ANSWER ✔✔- A control system manages, commands,
directs, or regulates the behavior of other devices or systems using control
loops.
- For continuously modulated control, a feedback controller is used to
automatically control a process or operation.
- Closed-loop control: impacts the measured variable and process
measurement provides feedback to the controller
1
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, - Open-loop control: one whose output has no impact on the measured
variable, so any form of process feedback is impossible
BACnet - 🧠ANSWER ✔✔- Building Automation Control Network
- ASHRAE supported open protocol allowing equipment form varying
manufactures to communicate with each other utilizing common standards
and gateway
LON - 🧠ANSWER ✔✔- Echelon Corporation Supported open protocol
network language allowing devices from varying manufacturers to
communicate at the IP level
- Usually does not require gateway devices
Power Line Carrier - 🧠ANSWER ✔✔- System that used the power lines to
carry control signals, which are low-voltage high frequency coded signals
- Power Line Carrier Control (PLC) technology use electrical distribution
system as a means for inter-device communication
- They do this by superimposing their digital messages over the 60 Hz
power sine wave
- Modern PLC systems that use spread spectrum technology are much
more tolerant of harmonics and encounter very few problems
2
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Systems 2025/2026 Exam Questions and
Answers | A+ Score Assured
Energy Management Strategy - 🧠ANSWER ✔✔- Goal: highest level of
service and comfort while operating within very constrained budget limits
- Strong financial incentives
- Must be accomplished without sacrificing comfort and safety
- Energy Management Control Systems (EMCS) can play a key roll in
meeting these challenges
Basic Controls - 🧠ANSWER ✔✔- A control system manages, commands,
directs, or regulates the behavior of other devices or systems using control
loops.
- For continuously modulated control, a feedback controller is used to
automatically control a process or operation.
- Closed-loop control: impacts the measured variable and process
measurement provides feedback to the controller
1
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, - Open-loop control: one whose output has no impact on the measured
variable, so any form of process feedback is impossible
BACnet - 🧠ANSWER ✔✔- Building Automation Control Network
- ASHRAE supported open protocol allowing equipment form varying
manufactures to communicate with each other utilizing common standards
and gateway
LON - 🧠ANSWER ✔✔- Echelon Corporation Supported open protocol
network language allowing devices from varying manufacturers to
communicate at the IP level
- Usually does not require gateway devices
Power Line Carrier - 🧠ANSWER ✔✔- System that used the power lines to
carry control signals, which are low-voltage high frequency coded signals
- Power Line Carrier Control (PLC) technology use electrical distribution
system as a means for inter-device communication
- They do this by superimposing their digital messages over the 60 Hz
power sine wave
- Modern PLC systems that use spread spectrum technology are much
more tolerant of harmonics and encounter very few problems
2
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
