AE 101 HW EXAM QUESTIONS AND
ANSWERS LATEST UPDATED
The conductor with the largest cross-sectional area for those that are listed is
size: 14 AWG. 6 AWG. 1/0 AWG. 1 AWG. 10 AWG. - ANSWER 1/0 AWG.
Some electrical conductors will oxidize, which is when a thin insulating layer is
formed on the outside of the bare conductor when exposed to air. This oxidation
will lead to high resistance connections that can fail over time. This oxidization
will occur most rapidly on: - ANSWER aluminum conductors.
A
Conductors larger than size 8 AWG are generally constructed as multi-stranded
conductors because: - ANSWER stranding makes the conductor more flexible.
If a human is exposed to 60-Hz alternating current through the body, the ampere
level that can begin to invoke a response of pain is: - ANSWER 8 mA.
An equipment grounding means is permitted to be: - ANSWER rigid metal
conduit (RMC).
Branch circuit conductors: - ANSWER are connected to electrical loads, such
as motors.
An electrical outlet is NOT considered to be: - ANSWER a switching or
disconnecting device.
Feeder circuit conductors: - ANSWER are used to supply other panelboards.
An example of an overcurrent device would be a(n): - ANSWER circuit
breaker.
The purpose of overcurrent protection is to protect: - ANSWER conductors
and conductor insulation from dangerous temperatures caused by excessive
current.
,A black insulated conductor size __________AWG, copper conductor is the
smallest conductor that the National Electrical Code permits to be used as a
grounded conductor that can be identified with white tape at each end and at any
point it is visible and exposed. Any size of conductor smaller is required to have
white insulation. - ANSWER 4
System grounding is the: - ANSWER connection of a conductor, in an
electrical system, to the earth, to limit the voltage imposed by lightning or line
surges.
Conductors that are run overhead from the utility transformer and are connected
to the service entrance conductors are commonly called: - ANSWER a service
drop.
Examine the diagram of the single-phase, 3-wire electrical system with 120
volts between wire A and the neutral, and 120 volts between wire B and the
neutral. Between wire A and B, there will be: - ANSWER 240 volts.
The purpose of the service disconnect is to: - ANSWER provide a means to
turn off the power to the building or structure.
To re-identify a black insulated, size 1 AWG conductor as an equipment
grounding conductor it is: - ANSWER permitted to strip off the exposed
insulation from the conductor.
An equipment grounding conductor is the: - ANSWER conductor used to
connect non-current carrying parts of electrical equipment to the grounded
conductor or the grounding electrodes.
The metallic elements that are either found or installed in the earth to connect
the grounded circuit conductor to earth are called: - ANSWER grounding
electrodes.
The circuit wire which is only permitted to carry current in the event of an
accident or malfunction, where electrical current is flowing outside of the
normal circuit path, is identified with insulation which is: - ANSWER green.
, The grounded circuit conductor is identified with insulation which is: -
ANSWER white.
The conductor with the largest cross-sectional area, for those that are listed, is
size: - ANSWER 1/0 AWG.
Type NM cable enters a metal device box and is secured by a box connector.
The cable is installed so the cable jacket extends past the box connector by a 1/4
inch. The device box has a depth of 3 inches, the minimum permitted length of
free conductor in the box is 6 inches. Free conductor is: - ANSWER measured
from the point the conductors emerge from the outer jacket of a cable.
A metal jacket cable that is often installed in commercial buildings is type: -
ANSWER MC.
The electrical cable that may only be installed in a damp or wet location is: -
ANSWER type UF (underground feeder) cable.
Electrical cable that is often used for wiring single-family dwellings, and may
only be installed in a dry location is: - ANSWER type NM (nonmetallic
sheathed) cable.
Examine the photograph below. This style of clamping means, for a metal box,
is called a: - ANSWER box connector.
In a dwelling where nonmetallic-sheathed cable is inserted into a cable opening
of a single-gang nonmetallic box, the cable jacket is required to extend into the
box at least 1/4 inch. In this situation, the cable is not required to be secured to
the box, provided the cable itself is secured within _______ of the opening to
the box. - ANSWER 8 inches
The amount of free conductor that must extend out the front of a 3 x 3 x 2 metal
device box is: - ANSWER at least 3 inches in length.
When a conductor is spliced or terminated, the NEC requires a certain amount
of "free conductor" to be left in each box. The amount of free conductor in a
box must be: - ANSWER at least 6 inches in length.
ANSWERS LATEST UPDATED
The conductor with the largest cross-sectional area for those that are listed is
size: 14 AWG. 6 AWG. 1/0 AWG. 1 AWG. 10 AWG. - ANSWER 1/0 AWG.
Some electrical conductors will oxidize, which is when a thin insulating layer is
formed on the outside of the bare conductor when exposed to air. This oxidation
will lead to high resistance connections that can fail over time. This oxidization
will occur most rapidly on: - ANSWER aluminum conductors.
A
Conductors larger than size 8 AWG are generally constructed as multi-stranded
conductors because: - ANSWER stranding makes the conductor more flexible.
If a human is exposed to 60-Hz alternating current through the body, the ampere
level that can begin to invoke a response of pain is: - ANSWER 8 mA.
An equipment grounding means is permitted to be: - ANSWER rigid metal
conduit (RMC).
Branch circuit conductors: - ANSWER are connected to electrical loads, such
as motors.
An electrical outlet is NOT considered to be: - ANSWER a switching or
disconnecting device.
Feeder circuit conductors: - ANSWER are used to supply other panelboards.
An example of an overcurrent device would be a(n): - ANSWER circuit
breaker.
The purpose of overcurrent protection is to protect: - ANSWER conductors
and conductor insulation from dangerous temperatures caused by excessive
current.
,A black insulated conductor size __________AWG, copper conductor is the
smallest conductor that the National Electrical Code permits to be used as a
grounded conductor that can be identified with white tape at each end and at any
point it is visible and exposed. Any size of conductor smaller is required to have
white insulation. - ANSWER 4
System grounding is the: - ANSWER connection of a conductor, in an
electrical system, to the earth, to limit the voltage imposed by lightning or line
surges.
Conductors that are run overhead from the utility transformer and are connected
to the service entrance conductors are commonly called: - ANSWER a service
drop.
Examine the diagram of the single-phase, 3-wire electrical system with 120
volts between wire A and the neutral, and 120 volts between wire B and the
neutral. Between wire A and B, there will be: - ANSWER 240 volts.
The purpose of the service disconnect is to: - ANSWER provide a means to
turn off the power to the building or structure.
To re-identify a black insulated, size 1 AWG conductor as an equipment
grounding conductor it is: - ANSWER permitted to strip off the exposed
insulation from the conductor.
An equipment grounding conductor is the: - ANSWER conductor used to
connect non-current carrying parts of electrical equipment to the grounded
conductor or the grounding electrodes.
The metallic elements that are either found or installed in the earth to connect
the grounded circuit conductor to earth are called: - ANSWER grounding
electrodes.
The circuit wire which is only permitted to carry current in the event of an
accident or malfunction, where electrical current is flowing outside of the
normal circuit path, is identified with insulation which is: - ANSWER green.
, The grounded circuit conductor is identified with insulation which is: -
ANSWER white.
The conductor with the largest cross-sectional area, for those that are listed, is
size: - ANSWER 1/0 AWG.
Type NM cable enters a metal device box and is secured by a box connector.
The cable is installed so the cable jacket extends past the box connector by a 1/4
inch. The device box has a depth of 3 inches, the minimum permitted length of
free conductor in the box is 6 inches. Free conductor is: - ANSWER measured
from the point the conductors emerge from the outer jacket of a cable.
A metal jacket cable that is often installed in commercial buildings is type: -
ANSWER MC.
The electrical cable that may only be installed in a damp or wet location is: -
ANSWER type UF (underground feeder) cable.
Electrical cable that is often used for wiring single-family dwellings, and may
only be installed in a dry location is: - ANSWER type NM (nonmetallic
sheathed) cable.
Examine the photograph below. This style of clamping means, for a metal box,
is called a: - ANSWER box connector.
In a dwelling where nonmetallic-sheathed cable is inserted into a cable opening
of a single-gang nonmetallic box, the cable jacket is required to extend into the
box at least 1/4 inch. In this situation, the cable is not required to be secured to
the box, provided the cable itself is secured within _______ of the opening to
the box. - ANSWER 8 inches
The amount of free conductor that must extend out the front of a 3 x 3 x 2 metal
device box is: - ANSWER at least 3 inches in length.
When a conductor is spliced or terminated, the NEC requires a certain amount
of "free conductor" to be left in each box. The amount of free conductor in a
box must be: - ANSWER at least 6 inches in length.
