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NCC Practice Test 6 Exam Questions With
Verified Answers
Wire bundles are commonly secured using _____. - answer✔tie wraps
The NEC requires that all grounding electrodes be _____. - answer✔bonded
If it is necessary to oversize a motor to provide a wide speed range, it should not be increased by
more than _____. - answer✔1hp
When installing hammer-driven pins and studs in soft concrete block, the drive pin or stud
should be embedded in the concrete for at least _____. - answer✔1 1/4" (32 mm)
The maximum allowable spacing between horizontal wireway supports is _____. - answer✔10'
If a mercury thermostat seems out of adjustment, the first thing to do is ____. - answer✔check
for accurate leveling
A type of anchor that is a good choice when jacking and leveling the fastening component is a
_____. - answer✔stud bolt anchor
Which of the following types of cable is suitable for dry locations only? - answer✔Type NM
Wire connectors marked only with the wire size should only be used on _____. - answer✔copper
conductors
A conventional thermostat should not be thrown into the regular trash because it _____. -
answer✔may contain mercury
Another name for a standoff support is a _____. - answer✔Minerallac
A self-contained meter installation refers to ____. - answer✔a single meter enclosure
A type of fastener with a bugle-shaped head is a ____. - answer✔drywall screw
Heat-shrink insulators are intented to provide _____. - answer✔strain relief and mechanical
protection
, ©BRAINBARTER 2024/2025
The tubing that carries heat-laden refrigerant gas from the evaporator to the compressor is known
as the _____. - answer✔suction line
Which of the following principles states that heat is created in one place and carried to another
by means of air or water? - answer✔Heat-transfer principle
A typical metric fastener size is ____. - answer✔M8 x 1
A type of conduit body with a 90 degree connector and the cover on the left is a _____. -
answer✔Type LL
EMT must be supported every ____. - answer✔10ft
The purpose of the defrost cycle in a heat pump is to ____. - answer✔prevent ice buildup on the
outdoor coil
A true statement concerning solid versus stranded conductors is _____. - answer✔the diameters
are different
Cable trays mounted in a tunnel are most likely to use ____. - answer✔wall mounting
The best electrical tape to use as a protective overwrap on high-voltage cables is ____. -
answer✔high-temperature silicone rubber
figure - answer✔autotransformer reduced-voltage starter
It is important to do which of the following when conductors are fed into long runs of conduit? -
answer✔Make sure the wires are straight and do not cross over each other.
Which of the following inscriptions on a wire connector indicates that it is designed for use on
both copper and aluminum wire? - answer✔AL-CU
NEC Article 386 contains_____. - answer✔the installation specifications of surface metal
raceways
Which of the following is true of drain wires in fire alarm and instrumentation cable? -
answer✔Only one end is typically grounded.
Derating factors shall only be applied when the number of current-carrying conductors in a
wireway exceeds _____. - answer✔30
Which of these devices can retain a high-voltage charge after power has been removed? -
answer✔Capacitors used in motor circuits
The thermostat terminal that is connected to the reversing valve control in a heat pump is _____.
- answer✔O
NCC Practice Test 6 Exam Questions With
Verified Answers
Wire bundles are commonly secured using _____. - answer✔tie wraps
The NEC requires that all grounding electrodes be _____. - answer✔bonded
If it is necessary to oversize a motor to provide a wide speed range, it should not be increased by
more than _____. - answer✔1hp
When installing hammer-driven pins and studs in soft concrete block, the drive pin or stud
should be embedded in the concrete for at least _____. - answer✔1 1/4" (32 mm)
The maximum allowable spacing between horizontal wireway supports is _____. - answer✔10'
If a mercury thermostat seems out of adjustment, the first thing to do is ____. - answer✔check
for accurate leveling
A type of anchor that is a good choice when jacking and leveling the fastening component is a
_____. - answer✔stud bolt anchor
Which of the following types of cable is suitable for dry locations only? - answer✔Type NM
Wire connectors marked only with the wire size should only be used on _____. - answer✔copper
conductors
A conventional thermostat should not be thrown into the regular trash because it _____. -
answer✔may contain mercury
Another name for a standoff support is a _____. - answer✔Minerallac
A self-contained meter installation refers to ____. - answer✔a single meter enclosure
A type of fastener with a bugle-shaped head is a ____. - answer✔drywall screw
Heat-shrink insulators are intented to provide _____. - answer✔strain relief and mechanical
protection
, ©BRAINBARTER 2024/2025
The tubing that carries heat-laden refrigerant gas from the evaporator to the compressor is known
as the _____. - answer✔suction line
Which of the following principles states that heat is created in one place and carried to another
by means of air or water? - answer✔Heat-transfer principle
A typical metric fastener size is ____. - answer✔M8 x 1
A type of conduit body with a 90 degree connector and the cover on the left is a _____. -
answer✔Type LL
EMT must be supported every ____. - answer✔10ft
The purpose of the defrost cycle in a heat pump is to ____. - answer✔prevent ice buildup on the
outdoor coil
A true statement concerning solid versus stranded conductors is _____. - answer✔the diameters
are different
Cable trays mounted in a tunnel are most likely to use ____. - answer✔wall mounting
The best electrical tape to use as a protective overwrap on high-voltage cables is ____. -
answer✔high-temperature silicone rubber
figure - answer✔autotransformer reduced-voltage starter
It is important to do which of the following when conductors are fed into long runs of conduit? -
answer✔Make sure the wires are straight and do not cross over each other.
Which of the following inscriptions on a wire connector indicates that it is designed for use on
both copper and aluminum wire? - answer✔AL-CU
NEC Article 386 contains_____. - answer✔the installation specifications of surface metal
raceways
Which of the following is true of drain wires in fire alarm and instrumentation cable? -
answer✔Only one end is typically grounded.
Derating factors shall only be applied when the number of current-carrying conductors in a
wireway exceeds _____. - answer✔30
Which of these devices can retain a high-voltage charge after power has been removed? -
answer✔Capacitors used in motor circuits
The thermostat terminal that is connected to the reversing valve control in a heat pump is _____.
- answer✔O
