test Flashcards
Which of the following drive the market for EVs?
Decreased cost of electric vehicles
Increased interest in alternatives to gas-powered vehicles
A partial zero emissions vehicle (PZEV) is defined as which of the following?
A gas-engine vehicle that has zero evaporative emissions from its fuel system
The state of charge is the available capacity of the battery, expressed as a percentage.
true
Which of the following describes an advantage that hybrid electric vehicles have over traditional gas-powered vehicles?
Hybrid vehicles have superior efficiency compared to gas-powered vehicles.
alternative to fossil fuels?
Compressed air
Electricity
Fuel cell
The EV industry is comprised of ? .
auto manufacturers
consumer advocacy groups
EV charging equipment manufacturers
research and standards organizations
The first electric vehicle can be traced back to
1832
Which of the following illustrates why electric vehicles were so popular in the early days of automobiles?
They were clean to operate.
They were quiet.
What factors limited the popularity of EVs as internal combustion engine vehicles came to the market in the early 1900s
Charge times
Range
Speed
What was the first mass-produced hybrid electric vehicle?
Toyota Prius
What improvements in technology have increased interest in EVs?
Improved range, power, and lighter batteries
What best describes early EVs?
Quiet, easy to start, and mechanically simple
categorys of electric vehicles?
BEV
HEV
PHEV
What type of EV has been available to consumers the longest?
HEV
Which of the following describes a plug-in electric vehicle that runs on batteries until nearly depleted, then switches over to an ICE generator to extend the battery range?
PHEV
A battery electric vehicle requires external charging but does not rely on an internal combustion generator for extended range.
true
EVs can be equipped with a(n) ? motor.
induction
permanent magnet
Regenerative braking is best described by which of the following?
An energy recovery system
Which of the following describes an EV drivetrain architecture in which power can be transmitted to the drive from two sources at the same time?
Parallel hybrid drive
What types of commercial/industrial vehicles are currently available in an electrified version?
Cargo and material-handling equipment
Delivery vans and buses
Semi-trailer trucks
Forklifts, yard tractors, and drayage trucks are all examples of ? .
cargo-handling equipment
Charging methods for battery electric buses include which of the following?
Above/below bus charging wireless charging
Plug-in charging
Wireless power transfer
Fleet vehicle battery capacity has reached upward of ? for heavy duty vehicles.
550 kWh
Charging is defined as which of the following?
Supplying power (kW) to an EV battery
Which of the following acronyms represents the level of charge present in an EV battery?
SOC
The first EV chargers were external and supplied DC current directly to the vehicle’s batteries.
false
Which of the following was an early electric vehicle charger?
Ford Dyna-Charge
Later in the development of EV charging equipment, the actual charging means was accomplished by a(n) ? that converts AC to DC to be used in charging the vehicle’s battery.
rectifier
Electric vehicle supply equipment (EVSE) provides which of the following safety features?
GFCI protection
Hardware fault detection
EVSE provides DC power to the electric vehicle charging port.
false
DC charging equipment provides DC directly to ? in an EV.
battery management systems
The Society of Auto Engineers (SAE) creates standards for
Maximum current and voltage specifications for EVSE
Plug configuration
Safety features
An AC charger with a single-phase 120-volt connection and 14-16 amperes of continuous current output is classified as a ? charger.
lvl 1
An AC charger with a single-phase 208-volt or 240-volt connection and a continuous current output of up to 80 amperes is classified as a ? charger.
lvl 2
The purpose of the J1772 connector pins is to provide ? .
a charging interface that is safe for consumers to use
a means to signal the EVSE to stop charging based on the pin contact state
signals to the EVSE that the connector is properly seated on the vehicle
Which of the following is true about the J1772 standard control pilot terminal pin’s function?
It changes the state of the EVSE according to the voltage present.
It defines the state of the EVSE.
It uses a +12V to -12V AC square wave signal.
Which of the following is not a variable that determines the charging time of an EV?
Connector configuration
The EV’s power acceptance rate should not be considered when making EVSE purchasing decisions.
false
The State of Charge of the EV battery is ? .
a determining factor in calculating the time necessary to fully charge an EV
Which of the following is the Japanese DC quick charging standard?
CHAdeMO
The CHAdeMO V1.0 Standard has charging power up to ? at ? , up to ? .
62.5 kW / 500 VDC / 125 A
Wireless EV charging utilizes the principles of ? .
induction
Which of the following is connected to the charge controller of a wireless EV charger via hardwiring?
Power source coil
What are the advantages of wireless charging?
It has no exposed electrical contact points
Wireless charging is more expensive than coupled EVSE.
true
What is the SAE standard for wireless charging?
J2954 recommended practice
The SAE standard for wireless charging has specifications that include which of the following?
Magnetic triangulation for vehicle alignment over the power source coil
.
Means to allow for payment without physical interaction
Up to 11 kW charging capacity
facts about EV charging networks
Charging networks offer both paid memberships and free memberships with pay-as-you-go charging.
There are over a dozen networks across the U.S. and Canada.
They allow businesses a way to draw consumers to charging equipment and generate revenue via transaction processing.
EV networks utilize memberships that are ? .
fee-based or pay-as-you-go
EV networks generate revenue with
Call-to-pay
Membership fees
Station usage fees
The National Electrical Code (NEC) ? .
provides minimum installation requirements
Installations covered by the NEC include
Industrial substations
Installations on public and private premises
Recreational vehicles, floating buildings, and mobile homes
NEC Chapters 1-4 apply to ? .
all installations except as modified by Chapters 5, 6, and 7
NEC Chapter 8 covers ? systems and ? subject to Chapters 1-7 unless specifically referenced.
communications / is not
Chapter 9 of the NEC contains
Tables that are applicable and enforceable when referenced elsewhere in the Code
Definitions that are specific to a particular article are located in which of the following sections?
XXX.2
Article 110 covers ? requirements for wiring and equipment.
general
The maximum amount of current a conductor can carry under the conditions of use without exceeding its temperature rating is found using the calculation methods based in Article 310.
true
Temperature ratings of equipment, overcurrent devices, and conductors must be ? and ? to not exceed the lowest rated element of the circuit.
selected / coordinated
Requirements for branch circuits and AFCI/GFCI protection of branch circuits are found in ? .
210
The ? load for listed occupancies is based on Table 220.12.
lighting
Which of the following calculations are covered in Article 220?
Residential, commercial, industrial service, and feeder
The tables in Article 310 identify ? .
allowable ampacity of conductors based on conductor size and material
ampacity adjustment and correction factors
wire types and application
NEC 110.14(C) requires conductor ampacity to be ? .
coordinated with equipment termination ratings
According to Article 625, EVSE is equipment that has the specific purpose of transferring energy from ? to the electric vehicle.
the premises wiring system
(id:89603) Overcurrent protection for EVSE is covered in ? .
625.41
EVSE output cable is permitted to be made from Type ? cable and is generally permitted to have a maximum length of ? .
EVJT / 25’
EVSE must be equipped with a(n) ? that prevents the charging connector from being accidentally energized before it is connected to the vehicle.
interlock
EVSE equipment shall have means to ? the charging cable if strain is placed upon it that could rupture the cable or connector, leading to exposure of live parts.
deenergize
EVSE shall have a(n) ? system for shock protection for personnel.
listed
When an EV and EVSE is used to facilitate power supply as an interactive power production source, which article must be applied?
Article 705
When an EV and its EVSE is used as a power supply for an optional standby system, requirements found in ? are applied.
Article 702
The NECA 413-2012 Standard is the only ANSI-approved standard for EVSE installation and maintenance.
true
NECA 413-2012 contains ? requirements for EVSE installation, covering everything from planning an installation to ADA considerations and commissioning process.
performance-based
Level 2 EVSEs with a rating of 6.6 kilowatts can supply ? of charge current when operating at 220 VAC.
6,600 W/220 VAC = 30 A
Conducting an onsite visit when assessing a location for an electric vehicle supply equipment (EVSE) installation is important for which of the following reasons?
It allows the electrical contractor to understand the prospective customers’ needs for an EVSE installation.
It provides an opportunity for the electrical contractor to gather facts and present themselves as a knowledgeable professional.
Information gathered during the site visit should include which of the following?
Details about the existing electrical system
Details on the desired EVSE location
Notes on how the customer intends to use the EVSE installation
A successful meeting with a prospective customer requires the contractor or contractor’s representative to ? .
demonstrate that they are qualified and have the needed expertise to handle the project
listen to the customer and ask questions
look professional and speak professionally
Incentives available for EVSE installation include which of the following?
State or federal tax credits
Tax incentives from the city of municipality
Time-of-use discounted rates or other incentives from the serving utility
Leadership in Energy and Environmental Design (LEED) has ? certification levels.
4
Installation of EVSE at an existing building is worth as many as ? LEED
points.
15
Installing electric vehicle charging equipment may ? public perception of a business.
improve
When a business installs charging equipment, the public may sense that the business supports which of the following?
Sustainability
Determining the appropriate location for EVSE requires the person planning the installation to consider which of the following?
How the customer plans on using the installation
Location of possible electrical supply points
The security of the proposed location
Proper location of EVSE may include consideration of ADA guidelines depending on location.
True
Jurisdictional codes and requirements should ? be checked when determining the location and other features of the EVSE.
always
Bollards, curbs, and wheel stops can protect charging equipment from which of the following?
Physical damage from vehicles
Adequate site lighting increases the safety of an EVSE location.
true
Trailblazing signs are for which of the following purposes?
Direct drivers to the location of EV charging equipment
According to the ADA guidelines, what percentage of general parking spaces should be accessible?
4 %
ADA parking space guidelines can be used as a guide when determining the number of EV charging spaces that should be made accessible.
true
ADA guidelines are useful when planning an EVSE installation because ? .
they establish clear space around equipment that allows for wheelchair approach and access
they establish equipment characteristics that increase accessibility
Operable parts of accessible equipment should be located ? above finish grade per ADA guidelines.
15”-48”
The maximum depth of a barrier, such as a curb or housekeeping pad, in front of accessible equipment is ? .
10”
DC fast chargers pose accessibility challenges because their cables and connectors are larger and heavier than standard Level 1 and Level 2 EVSE.
true
Which of the following are benefits of commissioning the installation of electric vehicle supply equipment (EVSE)?
Increased communication between the customer and installer
Reduced call back rate
The customer has peace of mind and is educated in the process
? is the process that ensures mechanical, electrical, and other building systems are installed, tested, and perform interactively in accordance with design documents.
Commissioning
One of the tests performed by an EVSE test set is to ? .
test EVSE ground fault response
Documentation transfers important information about an installation from the contractor to the owner.
true
A key component of commissioning fleet EVSE is to ensure that the ? understands how to manage the software.
customer
The proper hand-off of documentation should include electrical details, contract documents, operation and maintenance manuals as well as ? .
applications and approvals for incentive programs
inspection reports
rebate and tax forms
Utilities or municipalities may have requirements that are ? basic code considerations.
in addition to
Utilities may require a separate meter for EVSE ? .
billing rates and plans
EVSE-specific testing tools ensure ? and ground-fault response.
proper communications protocol function
Cord management is a major concern for manufacturers of EVSE as charge cables can cause a tripping hazard and are often subject to theft.
true
Commercial and fleet EVSE installations often require ? communications and ? functions.
networked / revenue collection
Recognized types of EVCE activation technology include which of the following?
RFID tags
Swipe cards
The acronym RFID stands for ? .
radio frequency identification
Part of the initial setup of fleet EVSE is making sure that the customer is comfortable with ? .
programming RFID cards
the reporting software
The most commonly reported repair to electric vehicle supply equipment (EVSE) manufacturers is damage to the ? .
cord set
Issues with data servers, EVSE locator networks, and billing networks are typically the result of a(n) ? problem.
communication
Public EVSE installations need to be protected from ? vehicles and maintenance equipment.
impacts with
The first step in the troubleshooting and repair guidelines flowchart is to ? .
visually inspect EVSE
The final step in the troubleshooting and repair guidelines flowchart is to ? .
release EVSE as fully operational
For information regarding specific tools required for servicing EVSE installed in public locations that use tamper-resistant hardware, one should refer to ? .
manufacturer’s instructions
The ? section of the troubleshooting and repair guidelines flowchart outlines issues specific to testing and procedures and may also be used as a sequence of events.
2nd
Which of the following steps in the troubleshooting and repair guidelines flowchart requires PPE for electric hazard?
Test unit using an EVSE simulator
Which of the following outlines the steps, in order, for repairing an EVSE unit?
Lockout EVSE, disassemble EVSE, inspect all components for damage, repair and replace
