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NCTI Installer Technician exam 2023 with 100% correct answers
NCTI Installer Technician exam 2023 with 100% correct answers
[Meer zien]Voorbeeld 3 van de 20 pagina's
Voorbeeld 3 van de 20 pagina's
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Voorbeeld van de inhoud
NCTI Installer Technician20 milliamperes is the same as ________. (Remember, 1 milliampere = 0.001 ampere.) - correct answer -
0.02 amperes
The orbital shell that has a maximum electron capacity of 18 electrons is the ___________ shell. -
correct answer -Third
A semiconductor material - correct answer -Has four valence electrons.
The major factor for determining whether a particular element is a conductor, a semiconductor, or an
insulator is - correct answer -The number of electrons in the valence shell.
Elements that are called conductors - correct answer -Have very few valence electrons.
The term voltage normally refers to - correct answer -The measurement of the difference in potential
between two charges.
The ampere - correct answer -Indicates how many coulombs pass a given point during 1 second.
Electric current is actually produced by - correct 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? - correct answer -The attraction between the positive nucleus and the
negative electron.
5 kilovolts is the same as - correct answer -5 kV.
,To create an electromagnet, - correct answer -Wrap a coil of insulated wire around an iron bar and pass
an electric current through the wire.
Magnetism - correct answer -Was discovered when the Greeks noticed that magnetite always aligned
itself in a north and south direction.
In a magnetic material, - correct 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 - correct answer -Determined by the magnitude of the
magnetomotive force (mmf).
The magnetic field - correct answer -Created by a straight piece of wire is weaker than that created by
forming loops of wire.
Flux lines - correct answer -Always curve around through the body of the magnet to form complete
loops.
Magnetic poles that are ___________ will ____________ each other when those poles are near each
other. - correct answer -Alike, repel
A permanent-magnet loudspeaker - correct 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 - correct 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) - correct answer -Electromagnet.
(-25) + (42) + (-62) + (20) = - correct answer --25
, (-17) - (-34) = - correct answer -17
(17) x (-19) = - correct answer --323
-49/-7 = - correct answer -7
(20) / (-4) + (-2) x (-10) - (-2) x (7) = - correct answer -29
3 6/9 + 6 1/3 + 9 5/9 = - correct answer -19 5/9
4/7 x 9 4/11 = - correct answer -5 27/77
7 3/8 divided by 7 1/4 = - correct answer -1 1/58
13 X 0.123 = - correct answer -0.99999
0.5349 divided by 0.1420 = - correct answer -3.7669014
Which of the following is a true axiom? - correct answer -When A = C and B = C, then A = B because both
are equal to C, which supports the axiom: Quantities equal to the same quantity are equal to each other.
Simplify and solve the equation: If E = IR then what is the formula for finding I? - correct answer -E/R.
The square of 7 = _____. - correct answer -49
The square root of 81 = _____. - correct answer -9
0.00004 = ______ x 10 to the power of ______. - correct answer -4, -5
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