WorksheetsEnergy and Power Part 1
Total questions: 94
Worksheet time: 48mins
Direct current (a) .
flows in one direction
changes polarity many times a second
is the traditional standard for distribution systems
operates at 60 hertz
The inverter uses power electronics to (a) .
Track the sun as it moves through the sky during the day.
Generate electricity from photons of sunlight hitting a solar panel.
Create series and parallel connections between solar panels.
Convert one form of electrical power into another form of electrical power.
3. (a) is a type of energy storage system.
Solar PV
Wind turbine
Tidal Power
Liquified Air
_______ can be placed in rivers to capture the hydrokinetic energy of currents and tides.
Boilers
Fuel cells
Turbines
Biomass is a (a) .
a fossil fuel
a renewable resource
carbon-emissions free
a carrier but not an energy source
A lightbulb that draws 8 watts is on for 6 hours. What is the energy consumed by the lightbulb? Energy = watts x hours
21 Wh
48 Wh
14 W
195 Wh
In nuclear power plants, the (a) the nuclear reaction produces changes water into steam.
Heat
Radioactivity
Uranium
Electrons
Which of the following energy sources is compatible with thermal electricity generation?
Nuclear
Hydro
Solar photovoltaics (PV)
Wind
In a nuclear power plant, the energy in a uranium atom is released by (a) its nuclei.
Creating
Merging
Destroying
Splitting
Wind turbine installations may result in (a) .
Greenhouse gas emissions
Air pollution
Resource depletion
Bird deaths
The formula for power is watts equals volts times amps or W = V x A.
True
False
The power content of the wind increases with the cube of the wind speed.
True
False
Natural gas (a) is the process of drilling wells to gather underground gas and bring it to the surface at the wellhead.
Compression
Geolocating
Extraction
Processing
(a) is a product of anaerobic digestion.
Biomass
Ethanol
Photosynthesis
18. Output ÷ Input is the calculation for (a)
Energy
Efficiency
Power
Resistance
True or False: A penstock is a pipe in an inclined tunnel that transports pressurized water to the turbine of a hydroelectric power plant.
True
False
In 2021, the increase in energy sector jobs outpaced growth in overall U.S. employment.
True
False
Which of the following is a 10-hour safety certification that covers general safety and health hazards, led by an authorized trainer?
OSHA 30
CDL
OSHA 10
NFPA 70E
22. ________________ are one reason that solar and wind generation is growing so fast.
A. Efficiency loss
B. Lack of suitable sites
C. Long construction times
D. Cost declines
Coal requires (a) to burn.
Oxygen
Nitrogen
Carbon
Methane
Federal regulations provide a complete set of procedures that provide 100% of company-specific policies for environmental, safety, and health protection policies.
A. True
B. False
Over the past two decades, the efficiency of washing machines, refrigerators, and heat pumps has increased.
True
False
What phone number should always be called before you dig?
811
911
411
511
In the context of renewable power, curtailment means sending signals to solar and wind farm inverters to slow or shut off production.
True
False
A difference in (a) causes wind turbine rotor blades to spin. A. Height pressure B. Weight pressure C. Air pressure D. Water pressure
Height pressure
Weight pressure
Air pressure
Water pressure
(a) power is considered to be carbon-free electricity.
Coal
Natural Gas
Nuclear
Petroleum
Lithium-ion is the chemistry used most for _________________ batteries.
Large-scale energy storage
Single-use disposable
Flow
Thermal energy
Coal requires ______ to burn.
Oxygen
Nitrogen
Carbon
Methane
Natural gas is currently the second largest fuel source for U.S. electricity generation.
True
False
One watt-hour (Wh) is equal to (a)
1,000 kilowatt-hours
.001 kilowatts-hours
100 kilowatt-hours
.01 kilowatt-hour
Which of the following is the mission of the U.S. Environmental Protection Agency?
To assure the effective and efficient reduction of risks to the reliability and security of the grid.
To protect people and the environment from significant health risks, sponsor and conduct research, and develop and enforce environmental regulations.
To safeguard the American people, our homeland, and our values.
To help save lives and reduce loss with information, knowledge, and passion.
Hydrogen and oxygen atoms are combined in a (a) to create electricity.
Generator
Motor
Turbine
What is the purpose of the boiler drum in the steam-electric generation cycle?
To receive water, collect steam, and provide an outlet for steam on its way to the turbine.
To provide ignition and combustion for the fuel source used to heat water and turn it into steam.
To superheat and feed dry steam—steam that has no liquid—to the turbine.
All of the above
Which of the following actions demonstrates energy conservation?
Increasing the lumens per watt of lightbulb
Decreasing the BTUs of coal required to produce 1 kWh of electricity
Turning a lightbulb off when it's not in use
Increasing the watts of power delivered by a solar panel
Geothermal energy comes from the photons of sunlight.
True
False
Combined cycle natural gas power plants use gas turbines but not steam turbines.
True
False
A laptop draws 50 watts while charging, and fully recharging the laptop requires two hours of charging. How much energy is required to recharge the laptop?
50 W
200 Wh
100 Wh
195 Wh
________ is an energy carrier but not a primary energy source.
Natural gas
Coal
Hydrogen
Solar power
OSHA is a nonprofit organization that develops consensus codes, such as the National Electrical Code.
True
False
After (a) has passed through the turbine, generating electricity, it’s turned into water by the condenser.
Coal dust
Natural gas
Steam
Hydrogen
Spent uranium fuel rods are radioactive.
True
False
__________ plants utilize turbines and generators to convert the kinetic energy in flowing water into electricity.
Hydrogen power
Hydroelectric
Nuclear power
Wind power
_________ of sunlight excites the electrons in solar cells to generate electricity.
Atoms
Protons
Neutrons
Photons
An example of centralized generation is (a) .
1 million volt dc transmission lines
substations operating between transmission and distribution lines
a 500 kW rooftop solar photovoltaic array on a commercial building
a 1 GW nuclear power plant connected to the grid via transmission lines
Which of the following is a characteristic of the interpersonal employability skill of Communication?
Consider different points of view and strive to understand why information is presented in a certain way.
Plan for success and learn to handle failure.
Be an active listener and ask for clarification when necessary to avoid misunderstandings.
Consider others’ needs and points of view when making decisions.
Nuclear power facilities can quickly shift from shutdown or low power operation to full power output and provide base load, peak power, and load-following.
True
False
Interconnected generation sources, loads, power controls, and protective equipment, operating separately from or interconnected with the rest of the electrical grid, is a (a) .
power plant
substation
microgrid
solar PV system
Marine energy from wave and tidal power is a significant source of electricity generation in the United States.
True
False
PURPA, the Public Utilities Regulatory Policies Act of 1978, mandated that electric utilities purchase power generated by small power production facilities (≤ 80 megawatts), which are known as (a) .
Independent system operators
Investor-owned utilities
Regional transmission organizations
Qualifying facilities (QFs)
The (a) involves exchanges between the Earth’s atmosphere, biosphere, oceans, and geological formations.
Photovoltaic effect
Carbon cycle
Transportation system
Utility grid
Congress passed the ________, and the President established the ________ in 1970.
Affordable Clean Energy Rule, OSHA
Clean Power Plan, DOL
Electric vehicles and heat pumps are examples of traditionally ________ technologies being modernized with ________ alternatives as part of the effort to decarbonize the energy sector.
Battery-powered, solar-powered
Inexpensive, expensive
________________ are organizations that oversee the generation and delivery of wholesale electricity in competitive markets.
Balancing authorities
North American Electric Reliability Corporation (NERC) and Federal Energy Regulatory Commission (FERC)
Institute of Electrical and Electronics Engineers (IEEE) and Electric Reliability Council of Texas (ERCOT)
Independent System Operators (ISOs) and Regional Transmission Organizations (RTOs)
IEEE 1547-2018 is a standard that defines (a) .
How utility power generation, transmission, and distribution systems are built and maintained
The technical specifications required for connecting distributed energy resources (like solar and wind farms) to electric power systems (the grid)
Interstate transmission of natural gas, crude oil, refined petroleum products, and electricity, as well as interstate wholesale sales of electricity
Regional balancing authority scope and jurisdiction
(a) have made efficient and cost-effective conversion from AC to DC and from one DC voltage to another DC voltage possible.
Steam engines
Iron-core transformers
Rotary converters
By the 1950s, over 90% of homes in rural locations had access to (a) .
Natural gas
Solar power
Electric power
Hydropower
A general rate case is (a) .
The regulatory proceeding overseen by a utility commission that sets utility rates (prices)
The amount of money a utility must receive from its customers annually to cover its operating costs and earn a reasonable profit
The total amount of money brought into a business by selling products and services
The amount owed by a borrower to a lender
(a) regulates the rates and services of all investor-owned public utilities in North Carolina.
The Electricities Organization
Duke Energy
The Electric Membership Cooperative
(a) is the investor-owned utility (IOU) that serves the majority of electric customers in North Carolina.
Dominion Energy
Electricities
Duke Energy
Blue Ridge Energy
Exelon Corporation is the nation’s largest ________, serving more than 10 million customers through six fully regulated transmission and distribution utilities.
Largest generator of electricity
Regional transmission organization
Utility company
The (a) gave the Securities and Exchange Commission (SEC) the authority to regulate, license, and break up electric utility holding companies.
Sherman Antitrust Act
Public Utility Holding Company Act
Clean Power Plan Act
Clean Air Act
66. Energy markets (a) .
Are used by state utility commissions to determine revenue requirements for regulated IOUs
Determine the percentage change in the value of an investment
Determine the cost of equipment used to generate and deliver energy
Are auctions used to coordinate energy production on a day-to-day basis
Constellation is the nation’s largest producer of
Carbon-free energy
Substation transformers
Wind power
Investor-owned utilities (IOUs) are (a)
Businesses owned by member-owners.
Nonprofit public power entities owned and controlled by the local government.
Private enterprises owned by shareholders.
Federal area power administrations.
Westinghouse built for the 1893 Chicago World’s Fair.
DC-to-DC conversion stations
Direct current (DC) electric generators
Telegraph service
Electric vehicles and heat pumps are examples of traditionally ______ technologies being modernized with ______ alternatives as part of the effort to decarbonize the energy sector.
Battery-powered, solar-powered
Inexpensive, expensive
Eastern, Western, and Texas (ERCOT) are the three major U.S. _________________.
Interconnection system grids
Independent system operators
Regional transmission organizations
Balancing authorities
Decarbonization refers to the process of reducing or eliminating carbon dioxide (CO2) emissions, particularly those arising from human activities.
True
False
In the United States, the alternating current power grid operates at a frequency of (a) .
480-Hz
60-Hz
240-Hz
120-Hz
SCADA is an acronym for ________________.
Sensory Command and Dispatch Automation
Super Computer and Didactic Actuator
Supervisory Control and Data Acquisition
Systems Capture and Distraction Advisor
Operating at lower voltages is a characteristic of as compared to .
Radial systems, networked systems.
Transmission systems, distribution systems.
Utility transmission transformers are structures designed to support high-voltage power lines and facilitate the transmission of electrical energy across long distances.
True
False
The threat of high winds bringing tree branches into contact with energized power lines and causing (a) has increased the frequency of public safety power shutoffs.
Brownouts
Cyberattacks
Wildfires
Overload
A(n) (a) distribution network has multiple power sources for a group of distribution customers.
Interconnected
Radial
Web
Loop
“Service drop” means the wires that run from the to a .
Primary circuit, secondary circuit
Power plant, substation
True or false: Maintaining right-of-way clearances and implementing scheduled vegetation management programs along transmission corridors help prevent power outages.
True
False
A power brownout is (a)
When power is completely unavailable for some length of time.
When voltage drops or sags below the voltages that appliances, tools, and electrical devices are designed to use.
An attempt by cybercriminals (hackers) to steal or destroy information or disable networks via unauthorized computer system access.
Preemptively shutting off power during a public safety shutoff to avoid destructive wildfires.
A(n) ___________ includes two-way communications and enhanced data capture while a(n) ___________ does not.
Analog meter, smart meter
Smart meter, analog meter
Overcurrent protective device, remote terminal unit (RTU)
Recloser, programmable logic controller (PLC)
A (a) converts infrared data into an electronic image that shows the surface temperatures of an object.
Proving Unit
Torque wrench
Multimeter
Thermal camera
Grid congestion means (a) .
Lineworkers are unavailable for required maintenance.
Transmission lines are overloaded and cannot carry additional electricity flow.
Public power safety shutoffs will cause rolling blackouts.
Traffic jams have caused power demand to spike.
A recloser a type of (a) installed on distribution lines that shuts off electric power when problems occur.
Capacitor
Fuse
Automated electric switch
Voltage regulator
(a) allows transmission systems to minimize power losses caused by resistance.
High current
High resistance
High frequency
(a) allow alternating current (AC) voltage to be increased or stepped up so electricity can be transmitted efficiently over long distances.
Photovoltaics
Transformers
Electric vehicles
Combined-cycle turbines
Natural gas is used in direct ________ for efficient and reliable heating and cooking in homes and businesses.
Current
Construction
Capacity
True or false: By conducting risk assessments and integrating resilience planning, utilities can respond more nimbly to extreme weather events.
True
False
True or False: Natural gas is the fuel used for approximately 40 percent of U.S. electrical generation.
True
False
The four primary extraction methods are conventional drilling, _________ fracturing, coalbed extraction and offshore drilling.
Microscopic
Hydronic
Prehistoric
Hydraulic
Primary distribution circuits carry power from the _____________ to the ______________.
A. Distribution transformer, service drop.
B. Service drop, customer meter.
C. Generating facility, substation.
D. Substation, local distribution service area.
True or false: Two-stroke power plants are designed to maximize natural gas utilization efficiency by using gas turbines and steam turbines.
True
False
Insulators ______________ and must have high resistivity and be weatherproof.
Provide overcurrent protection
Secure and support conductors
Regulate voltage
Step-down voltage
Advancements in gas (a) materials have greatly improved the performance and safety of gas transmission and distribution systems.
Pipe
Engine
Tank
Station
Natural gas transformer stations play a vital role in natural gas transportation through pipelines. Their primary function is to compress the natural gas to increase its pressure, allowing it to flow efficiently and overcome the frictional losses and pressure drops that occur during transmission.
True
False
True or false: Renewable natural gas (RNG), also known as biomethane or biogas, is produced from organic waste materials, such as agricultural waste, food scraps, sewage, landfill gas, and animal manure, usually through anaerobic digestion.
True
False
Compared to coal-fired electricity generation, natural gas has ________ emissions, ________ efficiency, and faster start-up and ramp-up.
Alternating, direct
Renewable, non-renewable
