5/1 Quiz 2
What are the basic categories of shop drawings?
- Components - Software/wiring
What are the most common power quality parameters that are controlled by an automated system?
- Current - Frequency - Voltage
Which of the following electrical loads are required by governing entities to have secondary power sources?
- Egress lighting - Fire pumps
What are the primary targets for improving energy efficiency through automation?
- HVAC systems - Lighting
Which of the following is a disadvantage of a centralized lighting control system?
- Long runs of conductors are required from all light fixtures and operator interfaces to the centralized panel. - The system is susceptible to widespread failure if there is a problem with the central control panel.
A hydroelectric-generating plant uses ? to generate electricity?
- Water Flow - Water pressure
A 10-megawatt fuel cell installation can be sited on about ? .
1 Acre
A 10-megawatt solar power installation can be sited on about ? .
100 Acres
The higher temperatures of a halogen lamp can improve the luminous efficacy up to about ? .
18 lm/W to 24 lm/W
What percentage of electricity is produced from nuclear power?
19%
Due to the high efficiency of fuel cell systems, fuel cell vehicles using hydrogen generated from natural gas are able to convert ? of that natural gas energy into motive energy to propel the car.
36-44%
Mean lumens is the rated average intensity of light produced by a lamp after it has operated for approximately ? of its rated life.
40%
A 10-megawatt wind installation can be sited on about ? .
500 Acres
What percentage of energy produced by lamps is ultraviolet energy, infrared energy, or heat that is not visible?
65% to 90%
What device makes decisions to change an aspect of a system based on sensor information and internal programming?
A controller
What type of device measures the value of a variable and transmits a signal that conveys the information?
A sensor
What type of switch allows an electrical system to be switched between two power sources?
A transfer switch
What type of control point exists only in software?
A virtual point
? are primarily used in controlled aerospace and underwater applications.
AFCS
What type of device accepts a control signal and causes a mechanical motion?
An actuator
What type of signal can convey information that has units of measurement?
Analog
An overcurrent protective device prevents ? from reaching excessively high temperatures, due to high currents, by opening the circuit.
Conductors or devices
A(n) ? is a heavy-duty relay for switching circuits with high-power loads.
Contactor
Sensor type, range, resolution, accuracy, calibration, signal type, power requirements, and operating environment are some of the factors that need to be considered when choosing a sensor to provide appropriate information in a way that is understandable by the receiving ? devices.
Control
Industrial automation is commonly applied at the ? rather than the ? .
Controller/ Device
? run at relatively cool temperatures, between 125° and 250° Fahrenheit.
DMFCS
Applications of ? range from small electronics, such as battery chargers and laptops, to larger applications, like stationary power, for telecommunications backup.
DMFCS
? is the intentional reduction of electrical power to a lamp in order to reduce its light output.
Dimming
Fuel cells ? produce particulate pollutants, unburned hydrocarbons, or the gases that produce acid rain.
Do not
Using fuel cells, the efficiency of fuel to electricity is nearly ? the efficiency of today's electric grid.
Double
What is the most common type of lighting installation?
Down lighting
In addition to featuring low emissions and quiet operation, fuel cells are ? .
Efficient
? is the amount of electrical power drawn by loads at a specific moment and is measured in watts.
Electrical demand
What is the most significant benefit of a building automation system?
Energy efficiency
? are the most commonly used source of secondary power.
Engine generators
Distributed lighting control is a lighting system that controls lights throughout a building via one main control panel.
False
Gas discharge lamps can be directly connected to electrical power sources.
False
There are ? main groups of a pneumatic control system.
Four
Tons of organic waste from food/beverage facilities, wineries, breweries, dairies, and large factory farms can be turned into ? via anaerobic digestion.
Fuel
Which of the following types of lamps are not commonly used in commercial buildings?
Heat Lamp
? lamps are typically used for general lighting locations that are switched on a schedule or locations where the lamps are operated for long periods of time.
High-intensity discharge (HID)
Which industries are applying the use of fuel cells?
I. Airports II. Data centers III. Food processing plants IV. Grocery stores V. Hospitals VI. Retail stores
There are many different ways that power quality sensors can monitor the power quality of an electrical power source. What are the common measurements that are taken by these sensors?
I. Current II. Frequency III. Harmonics IV. Noise V. Unbalance between 3Ø power supplies VI. Voltage
Which items use fuel cells?
I. Electric vehicles II. Smartphone battery rechargers III. Utility power
Which of the following are benefits of using fuel cells?
I. Energy security II. High efficiency III. Low to zero emissions IV. Reliability
How does a building automation system provide convenience for building owners, personnel, and occupants?
I. It automatically activates and deactivates some loads. III. It monitors the building and its systems for problems. V. It reduces the workload of maintenance and security personnel by providing predictive maintenance information.
A variable-frequency drive can control ? .
I. motor acceleration time II. motor braking III. motor deceleration time IV. motor speed V. motor torque
What types of devices are used for control devices in lighting systems?
Input/output
? have life spans of 50,000 hours or more and are resistant to physical shock and vibrations.
LEDs
What type of UPS design incorporates a transformer and an inverter/rectifier unit that are always connected to the output of the UPS?
Line-interactive
How is light output measured?
Lumens
? are typically deployed in stationary applications, providing high-quality primary and back-up power to utilities and businesses.
MCFCS
What type of HID lamp has an extra starting electrode?
Mercury Vapor
Which of the following is a main function of control devices in electrical systems?
Monitoring and maintaining a reliable and quality power supply
? are often seen in high-energy demand applications, such as hospitals, schools, and manufacturing and processing centers.
PAFCS
? are well-suited for cars and other specialty vehicles, such as forklifts, that need to start quickly or accelerate.
PEMFCs
? operate at cooler temperatures as compared to other types of fuel cells, between 80° to 200° Fahrenheit.
PEMFCs
What was the first type of automated control system used to control the indoor environment in a commercial building?
Pneumatic control system
The measure of how closely the power in an electrical system matches the nominal characteristics is called ? .
Power quality
Proper indoor lighting improves the ? of building occupants.
Productivity and safety
A ? is a set of rules and procedures for the exchange of information between two connected devices.
Protocol
Which of the following is not a type of control signal?
RS-468 signal
A(n) ? is an electrical switch that is actuated by a separate electrical circuit.
Relay
? are being used in a range of applications, from small residential auxiliary power units supplying heat and power to homes to large-scale stationary power generators for larger buildings and businesses.
SOFCs
? are the highest temperature fuel cells, operating at about 1,800° Fahrenheit.
SOFCs
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?
Secondary
What type of UPS system has high efficiency, small size, and low cost, but will switch completely over to the back-up mode for nearly any power quality problem?
Standby
What is the last point on the power distribution system for the power company?
The switchboard
? are caused by lightning strikes, unfiltered electrical equipment, contact bounce, arcing, and high current loads being switched on and off.
Transient Voltages
A fuel cell is composed of an anode, a cathode, and an electrolyte membrane.
True
A majority of stationary fuel cells in the United States connect directly to the nation's natural gas infrastructure.
True
A microprocessor-based control panel can store control programs based on input signals and/or time schedules.
True
Automated buildings are often called "smart buildings" or "intelligent buildings" because they include the controls to operate their systems optimally with little or no intervention from building personnel.
True
Ballasts that are based on inductors are often called magnetic ballasts because an inductor is a coil of wire that creates a magnetic field, which resists changes in the current flow through the coil.
True
CHP is an acronym that describes fuel cells that provide combined heat and power solutions. The efficiency of fuel cells goes up when used in this application.
True
Control logic is a portion of controller software that produces outputs based on inputs.
True
Initial costs and payback periods will influence a building owner's decision-making process when considering an automation system.
True
Lamps are rated in initial lumens and in mean lumens because light output from a lamp can change over time.
True
Net metering uses one meter that can measure power usage in either direction (importing or exporting), effectively subtracting exported electricity from imported electricity. This determines the net electricity consumption of the utility customer.
True
Power quality is influenced by the performance of the electrical generation and distribution equipment, as well as electrical loads operating on the system.
True
Utility workers could be seriously injured by unexpectedly energized equipment. For this reason, it is important for a distributed generator to immediately disconnect from the grid if there is a utility outage.
True
What type of motor controller is used to change the speed of an AC motor by changing the frequency of the supply voltage?
Variable-frequency drive
The terms "step-up transformer" and "step-down transformer" describe an increase or decrease in ? .
Voltage
? are commonly caused by overloaded transformers, undersized conductors, conductor runs that are too long, too many loads on a circuit, peak power usage (brownouts), and high-current loads being turned on.
Voltage sags
? are caused by loads near the beginning of a power distribution system, incorrectly wired transformer taps, and large loads being turned off.
Voltage swells
? illustrate both signal and power wiring for each panel and device, including information on power sources.
Wiring interconnection and block diagrams
What type of building automation technology is particularly attractive to the residential market?
X10 Technology
The electricity produced by a fuel cell is from ? .
a chemical process
Which of the following items will often dictate automation priorities within a building?
a.Equipment and products b.Location c.Occupancy density d.Special on-site processes E. ALL THE ABOVE
Hydrogen molecules are split into electrons and protons at the ? side.
anode
In a fuel cell, hydrogen passes through the ? and oxygen through the ? .
anode / cathode
Protons, electrons, and oxygen combine to produce water at the ? side.
cathode
A building automation system can have a large impact on a building by providing ? .
convenience, energy efficiency, system control
The use of fuel cells for reliable power can also be combined for use in ? .
cooling, fire suppression, heating
A ? is an electric lamp that produces light by striking an electrical arc across tungsten electrodes housed inside an arc tube.
high-intensity discharge (HID) lamp
Improved security, illuminated signage, and enhanced landscaping features are functions of ? lighting at ? .
outdoor/ night
PEM is a type of fuel cell. PEM stands for ?
proton exchange membrane
Building automation system devices can all communicate with each other on a(n) ? .
shared network
A DDC controller can only communicate with sensors and actuators ? .
to which it is directly connected
The byproduct(s) of fuel cells is/are ? .
water, heat, and electricity
