Batteries Test Questions and Answers
Natural gas vehicles can increase their range by using liquified natural gas instead of
compressed natural gas.
True
The battery chemistry typically used in EVs is ?.
li-Ion
What makes dependence on fossil fuels a national security concern for the United
States?
The heavy reliance on imports from foreign nations to meet demand.
A battery is at 50% SOC, what C-rate is necessary to fully charge it in 30 minutes?
1C
What unit of time is used for the basic C-rate determination?
Hour
Passenger vehicles in a fleet can efficiently be recharged with how much charger
power?
250 kW
According to Ohm's Law, if voltage increases ?
a. current may have increased
b. resistance may have increased
c. both resistance and current
d. All of the above
What does C-rate describe?
a. A rate of charge.
b. A rate of discharge.
c. Neither A or B.
d. Both A and B.
Both A and B
What is a typical difference between an HEV and a PHEV?
A PHEV can travel on just an electric motor.
Which type of vehicle does not need traditional fuel?
BEV
What is the primary benefit provided by wireless EV charging systems?
Convenience of no cables or plugs
How does the proximity detection pin promote safety on a J1772 charge coupler?
Fully verifying insertion before allowing to charge
What is the purpose of Pin L1 on the J1772 male charging connector?
The J1772 Pin L1 is the AC phase 1 line delivery.
What is the maximum AC amp draw of a 50 kW DC fast charger on a 480V AC service?
100A
What communication method does a J1772 combo charger use to send control pilot
signals related to safety functions?
Pulse Width Modulation (PWM)
What is the maximum rated current for CCS Combo 1 connectors?
, 500A
What type of electrical outlet can typically be used to plug in an AC level 1 electric
charger for home charging?
A standard 120V household outlet
The state of charge (SOC) affects the charge duration.
True
Which standard does NOT apply to wireless EV charging equipment installation?
J1772
What communication method resists external noise interference?
Differential signaling
EVSE demand factors are applied to feeder/service loads.
False
Can an electrician waive or alter NEC code rules that are explicitly stated as
"applicable," if the electrician is highly skilled?
No
What Chapter 3 violation results from improper use of NM cable for EVSE?
Unapproved wiring methods
Overcurrent devices must be ?
Coordinated
When can neutral demand factors be applied to EVSE circuits?
a. Neutral demand factors are applied to EVSE circuits for specified unbalanced loads
over 200 A.
b. Neutral demand factors are applied to EVSE circuits for all installations under 200 A.
c. Neutral demand factors are applied to EVSE circuits for continuous loads.
d. Neutral demand factors are applied to EVSE circuits optionally for any circuit.
a. Neutral demand factors are applied to EVSE circuits for specified unbalanced loads
over 200 A.
What indicates an NEC rule is supplemented by another article?
a. Supplemented by
b. An asterisk
c. A forward reference
d. Bold text
a. Supplemented by
Raceways should be arranged ?
c. To drain condensation
What does the NEC require in Section 110.14 for connecting conductors to terminals?
a. Any type of connector is permitted for terminal regardless of secure fit.
b. A mechanically secure electrical connection without damage to the conductors is
required, including the appropriate pressure connectors, lugs, or splices used.
c. Hardwiring directly to the EVSE terminals is a requirement.
d. Only non-pressure style connectors are permitted.
b. A mechanically secure electrical connection without damage to the conductors is
required, including the appropriate pressure connectors, lugs, or splices used.
Natural gas vehicles can increase their range by using liquified natural gas instead of
compressed natural gas.
True
The battery chemistry typically used in EVs is ?.
li-Ion
What makes dependence on fossil fuels a national security concern for the United
States?
The heavy reliance on imports from foreign nations to meet demand.
A battery is at 50% SOC, what C-rate is necessary to fully charge it in 30 minutes?
1C
What unit of time is used for the basic C-rate determination?
Hour
Passenger vehicles in a fleet can efficiently be recharged with how much charger
power?
250 kW
According to Ohm's Law, if voltage increases ?
a. current may have increased
b. resistance may have increased
c. both resistance and current
d. All of the above
What does C-rate describe?
a. A rate of charge.
b. A rate of discharge.
c. Neither A or B.
d. Both A and B.
Both A and B
What is a typical difference between an HEV and a PHEV?
A PHEV can travel on just an electric motor.
Which type of vehicle does not need traditional fuel?
BEV
What is the primary benefit provided by wireless EV charging systems?
Convenience of no cables or plugs
How does the proximity detection pin promote safety on a J1772 charge coupler?
Fully verifying insertion before allowing to charge
What is the purpose of Pin L1 on the J1772 male charging connector?
The J1772 Pin L1 is the AC phase 1 line delivery.
What is the maximum AC amp draw of a 50 kW DC fast charger on a 480V AC service?
100A
What communication method does a J1772 combo charger use to send control pilot
signals related to safety functions?
Pulse Width Modulation (PWM)
What is the maximum rated current for CCS Combo 1 connectors?
, 500A
What type of electrical outlet can typically be used to plug in an AC level 1 electric
charger for home charging?
A standard 120V household outlet
The state of charge (SOC) affects the charge duration.
True
Which standard does NOT apply to wireless EV charging equipment installation?
J1772
What communication method resists external noise interference?
Differential signaling
EVSE demand factors are applied to feeder/service loads.
False
Can an electrician waive or alter NEC code rules that are explicitly stated as
"applicable," if the electrician is highly skilled?
No
What Chapter 3 violation results from improper use of NM cable for EVSE?
Unapproved wiring methods
Overcurrent devices must be ?
Coordinated
When can neutral demand factors be applied to EVSE circuits?
a. Neutral demand factors are applied to EVSE circuits for specified unbalanced loads
over 200 A.
b. Neutral demand factors are applied to EVSE circuits for all installations under 200 A.
c. Neutral demand factors are applied to EVSE circuits for continuous loads.
d. Neutral demand factors are applied to EVSE circuits optionally for any circuit.
a. Neutral demand factors are applied to EVSE circuits for specified unbalanced loads
over 200 A.
What indicates an NEC rule is supplemented by another article?
a. Supplemented by
b. An asterisk
c. A forward reference
d. Bold text
a. Supplemented by
Raceways should be arranged ?
c. To drain condensation
What does the NEC require in Section 110.14 for connecting conductors to terminals?
a. Any type of connector is permitted for terminal regardless of secure fit.
b. A mechanically secure electrical connection without damage to the conductors is
required, including the appropriate pressure connectors, lugs, or splices used.
c. Hardwiring directly to the EVSE terminals is a requirement.
d. Only non-pressure style connectors are permitted.
b. A mechanically secure electrical connection without damage to the conductors is
required, including the appropriate pressure connectors, lugs, or splices used.
