Building Automation I Flashcards
How does a building automation system provide convenience for building owners, personnel, and occupants?
I. It automatically activates and deactivates some loads.
II. It automatically contacts service contractors when a problem is identified.
III. It monitors the building and its systems for problems.
IV. It provides a secure atmosphere for employees.
V. It reduces the workload of maintenance and security personnel by providing predictive maintenance information.
Select one:
a.
I., III., and V.
b.
II., III., and V.
c.
III., IV., and V.
d.
I., II., III., IV., and V.
A
What was the first type of automated control system used to control the indoor environment in a commercial building?
Select one:
a.
BACnet
b.
Direct digital control
c.
LonWorks
d.
Pneumatic control system
D
Which of the following items will often dictate automation priorities within a building?
Select one:
a.
Equipment and products
b.
Location
c.
Occupancy density
d.
Special on-site processes
e.
All of the above
E
Initial costs and payback periods will influence a building owner’s decision-making process when considering an automation system.
Select one:
True
False
True
Note: Other items that will influence a building owner’s decision-making process when considering an automation system include:
1. Maintenance
2. Impact on occupants
3. System flexibility
4. System upgradability
5. Environmental impacts
? illustrate both signal and power wiring for each panel and device, including information on power sources.
Select one:
a.
Detail drawings
b.
Manufacturer specifications
c.
Shop drawings
d.
Wiring interconnection and block diagrams
D
What type of device measures the value of a variable and transmits a signal that conveys the information?
Select one:
a.
A gateway
b.
A router
c.
A sensor
d.
None of the above
C
What device makes decisions to change an aspect of a system based on sensor information and internal programming?
Select one:
a.
A controller
b.
A gateway
c.
A relay
d.
An actuator
A
Which of the following is not a type of control signal?
Select one:
a.
Analog signal
b.
Digital signal
c.
RS-468 signal
d.
Structured network message
C
Which type of power source is typically located on or near customer facilities, requires little distribution infrastructure, and supplies power in the event of an interruption in power from the electric utility?
Select one:
a.
Centralized generation
b.
Primary
c.
Secondary
d.
Separately derived
C
What type of motor controller is used to change the speed of an AC motor by changing the frequency of the supply voltage?
Select one:
a.
High-frequency drive
b.
Low-frequency drive
c.
Variable-frequency drive
d.
Variable-voltage drive
C
The primary functions of an HVAC system include ? .
Select one:
a.
air conditioning (cooling)
b.
heating
c.
ventilating
d.
a. and b.
e.
a., b., and c.
E
In addition to the primary functions of an HVAC system, what are some additional functions of an HVAC system?
Select one:
a.
Air filtration
b.
Humidity control
c.
Smoke sampling
d.
a. and b.
e.
a., b., and c
D
Which of the following is not a component typically associated with a forced-air air-handling unit?
I. Cooling coils
II. Dampers
III. Dehumidifiers
IV. Ductwork
V. Fans
VI. Filters
VII. Heating coils
VIII. Humidifiers
IX. Sensors
X. Throttling valve
Select one:
a.
VII.
b.
VIII.
c.
IX.
d.
X.
D
What are the requirements for comfort?
I. Proper barometric pressure
II. Proper circulation
III. Proper filtration
IV. Proper humidity
V. Proper temperature
VI. Proper ventilation
Select one:
a.
I., II., III., IV., and V.
b.
I., II., IV., V., and VI.
c.
I., III., IV., V., and VI.
d.
II., III., IV., V., and VI.
D
Building pressure is influenced by ? .
Select one:
a.
turbulence around the building
b.
wind direction
c.
wind gusts
d.
a. and b.
e.
a., b., and c.
E
Control of the outside-air and the return-air dampers for economizing is based primarily on ? .
Select one:
a.
airflow
b.
differential pressure
c.
outside temperature
d.
a. and c.
e.
b. and c
D
The most common method of humidification is the addition of ? into the supply air.
Select one:
a.
condensation
b.
outside air
c.
steam
d.
none of the above
C
Boiler rooms usually have a dedicated AHU because they include some unique hazards that affect air-handling unit safeties, such as the presence of open flames in the boiler burner.
Select one:
True
False
True
What are the 5 common types of UPS system?
Standby
Line-interactive
Rotary
Double-conversion On-Line
Delta-conversion On-Line UPS
Distributed lighting controls are typically controlled by local control devices. They use ? and ? as opposed to ?.
Select one:
A) Controls/Control panels/Sensors
B) Sensors/Controls/ Control Panels
B
Centralized lighting control systems have the disadvantage of one control panel typically covers an entire building or at least a very large area.
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There are three types of occupancy sensors used in building automation systems.
Ultrasonic
Microwave
Passive Infrared.
How do they work?
Ultrasonic sensors use reflected sound waves and listen for a phase shift in the sound.
Microwave sensors are like ultrasonic sensors except using microwaves, not sound.
Passive Infrared sensors look for heat signature of people in their field of view.
Photo control is a common way to turn light ? at dusk and ? at dawn.
Select One:
A) On/Off
B) Off/On
A
Supply fans must be shutdown in response to various safety circuits activating. Examples include closed isolation dampers, fire alarm shutdown, and low temperature limit switches.
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