Page 1 of 41
NCTI INSTALLER TECHNICIAN EXAM NEWEST 2025
ACTUAL EXAM TEST BANK| 2 VERSIONS (VERSION A
& B) WITH COMPLETE 600 REAL EXAM QUESTIONS
AND CORRECT VERIFIED ANSWERS/ GRADED A+|
NCTI INSTALLER TECHNICIAN EXAM PREP 2025 (MOST
RECENT!!)
20 milliamperes is the same as ________. (Remember, 1
milliampere = 0.001 ampere.) .....ANSWER.....0.02 amperes
The orbital shell that has a maximum electron capacity of 18
electrons is the ___________ shell. .....ANSWER.....Third
A semiconductor material .....ANSWER.....Has four valence
electrons.
The major factor for determining whether a particular element is
a conductor, a semiconductor, or an insulator is
.....ANSWER.....The number of electrons in the valence shell.
,Page 2 of 41
Elements that are called conductors .....ANSWER.....Have very
few valence electrons.
The term voltage normally refers to .....ANSWER.....The
measurement of the difference in potential between two charges.
The ampere .....ANSWER.....Indicates how many coulombs pass a
given point during 1 second.
Electric current is actually produced by .....ANSWER.....The
transfer of energy from valence electron to valence electron as a
result of applied charges.
What prevents the electrons that orbit an atom's nucleus at high
speeds from breaking away from the nucleus due to centrifugal
force? .....ANSWER.....The attraction between the positive nucleus
and the negative electron.
5 kilovolts is the same as .....ANSWER.....5 kV.
,Page 3 of 41
To create an electromagnet, .....ANSWER.....Wrap a coil of
insulated wire around an iron bar and pass an electric current
through the wire.
Magnetism .....ANSWER.....Was discovered when the Greeks
noticed that magnetite always aligned itself in a north and south
direction.
In a magnetic material, .....ANSWER.....Where only some of the
magnetic domains are pointing in the same direction, the
magnetic field is weaker.
The strength of an electromagnetic field is
.....ANSWER.....Determined by the magnitude of the
magnetomotive force (mmf).
The magnetic field .....ANSWER.....Created by a straight piece of
wire is weaker than that created by forming loops of wire.
Flux lines .....ANSWER.....Always curve around through the body
of the magnet to form complete loops.
, Page 4 of 41
Magnetic poles that are ___________ will ____________ each
other when those poles are near each other. .....ANSWER.....Alike,
repel
A permanent-magnet loudspeaker .....ANSWER.....Has a cone
that moves back and forth in relation to the varying current of
the original sound.
The left-hand rule for electromagnetism in a wire states that
.....ANSWER.....If you wrap the fingers of your left hand around
the wire with your thumb pointing in the direction of the current
flow, your fingers will be wrapped in the direction of the
magnetic field.
The recording head of a tape recorder is actually a(an)
.....ANSWER.....Electromagnet.
(-25) + (42) + (-62) + (20) = .....ANSWER.....-25
(-17) - (-34) = .....ANSWER.....17
NCTI INSTALLER TECHNICIAN EXAM NEWEST 2025
ACTUAL EXAM TEST BANK| 2 VERSIONS (VERSION A
& B) WITH COMPLETE 600 REAL EXAM QUESTIONS
AND CORRECT VERIFIED ANSWERS/ GRADED A+|
NCTI INSTALLER TECHNICIAN EXAM PREP 2025 (MOST
RECENT!!)
20 milliamperes is the same as ________. (Remember, 1
milliampere = 0.001 ampere.) .....ANSWER.....0.02 amperes
The orbital shell that has a maximum electron capacity of 18
electrons is the ___________ shell. .....ANSWER.....Third
A semiconductor material .....ANSWER.....Has four valence
electrons.
The major factor for determining whether a particular element is
a conductor, a semiconductor, or an insulator is
.....ANSWER.....The number of electrons in the valence shell.
,Page 2 of 41
Elements that are called conductors .....ANSWER.....Have very
few valence electrons.
The term voltage normally refers to .....ANSWER.....The
measurement of the difference in potential between two charges.
The ampere .....ANSWER.....Indicates how many coulombs pass a
given point during 1 second.
Electric current is actually produced by .....ANSWER.....The
transfer of energy from valence electron to valence electron as a
result of applied charges.
What prevents the electrons that orbit an atom's nucleus at high
speeds from breaking away from the nucleus due to centrifugal
force? .....ANSWER.....The attraction between the positive nucleus
and the negative electron.
5 kilovolts is the same as .....ANSWER.....5 kV.
,Page 3 of 41
To create an electromagnet, .....ANSWER.....Wrap a coil of
insulated wire around an iron bar and pass an electric current
through the wire.
Magnetism .....ANSWER.....Was discovered when the Greeks
noticed that magnetite always aligned itself in a north and south
direction.
In a magnetic material, .....ANSWER.....Where only some of the
magnetic domains are pointing in the same direction, the
magnetic field is weaker.
The strength of an electromagnetic field is
.....ANSWER.....Determined by the magnitude of the
magnetomotive force (mmf).
The magnetic field .....ANSWER.....Created by a straight piece of
wire is weaker than that created by forming loops of wire.
Flux lines .....ANSWER.....Always curve around through the body
of the magnet to form complete loops.
, Page 4 of 41
Magnetic poles that are ___________ will ____________ each
other when those poles are near each other. .....ANSWER.....Alike,
repel
A permanent-magnet loudspeaker .....ANSWER.....Has a cone
that moves back and forth in relation to the varying current of
the original sound.
The left-hand rule for electromagnetism in a wire states that
.....ANSWER.....If you wrap the fingers of your left hand around
the wire with your thumb pointing in the direction of the current
flow, your fingers will be wrapped in the direction of the
magnetic field.
The recording head of a tape recorder is actually a(an)
.....ANSWER.....Electromagnet.
(-25) + (42) + (-62) + (20) = .....ANSWER.....-25
(-17) - (-34) = .....ANSWER.....17
