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NCTI Installer Tech | 101 Multiple Choice Part 1 Questions and Answers {100% Correct}
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NCTI Installer Tech | 101 Multiple Choice Part 1Questions and Answers {100% Correct}
20 milliamperes is the same as _________ amperes.
A2
B 0.2
C 0.02
D 0.002 - Answer C
The orbital shell that has a maximum capacity of 18 valence electrons is the
________ shell.
A First
B Second
C Third
D Fourth - Answer C
A semiconductor material has ___ valence electron(s)
A1
B2
C3
D 4 - Answer D
The major factor in determining whether a particular element is a conductor,
semiconductor, or insulator is
A The number of electrons in the valence shell
B The number of neutrons in the nucleus
C The number of positrons in the nucleus
D The number of electron shells filled - Answer A
Elements that are called conductors have
A No valence electrons
B Very few valence electrons
C Half of the maximum capacity of valence electrons
D Completely full valence electrons - Answer B
The term voltage usually refers to
,A Indicates how many coulombs pass a given point during the 1 second
B The measurement of electrical resistance
C The measurement of electromotive force
D The measurement of the difference in potential between two charges -
Answer D
The ampere
A Indicates how many coulombs pass a given point during the 1 second
B The measurement of electrical resistance
C The measurement of electromotive force
D The measurement of the difference in potential between two charges -
Answer A
Electrical current is actually produced by
A The transfer of energy from positrons to valence electrons as a result of applied
charges
B The transfer of energy from valence electron to valence electron as a result of
applied charges
C The transfer of energy from positrons to positrons as a result of withdrawn
charges
D The transfer of energy from valence electron to valence electron as a result of
withdrawn charges - Answer B
What prevents the electrons that orbit an atom's nucleus at high speeds from
breaking away from the nucleus due to centrifugal force?
A The repulsion between the positive nucleus and the negative electrons
B The repulsion between the neutral nucleus and the negative electrons
C The attraction between the neutral nucleus and the negative electrons
D The attraction between the positive nucleus and the negative electrons -
Answer D
5 kilovolts is the same as
A 50 kV
B 5 kV
C 0.5 mV
D 5 MV - Answer B
, To create an electromagnet
A Wrap a coil of uninsulated wire around an iron bar and pass an electric current
through the wire
B Wrap a coil of insulated wire around a copper bar and pass an electric current
through the wire
C Wrap a coil of uninsulated wire around an iron bar and pass an electric current
through the wire
D Wrap a coil of insulated wire around an iron bar and pass an electric current
through the wire - Answer D
Magnetism
A Was discovered when the Greeks noticed that magnetite always aligned itself in
a west and east direction
B Was discovered when the Greeks noticed that magnetite always aligned itself in
a north and south direction
C Was discovered when the Romans noticed that magnetite always aligned itself
in a north and south direction
D Was discovered when the Romans noticed that magnetite always aligned itself
in a west and east direction - Answer B
In a magnetic material
A Where all of the magnetic domains are pointing in the same direction, the
magnetic field is weaker
B Where only some of the magnetic domains are pointing in the same direction,
the magnetic field is stronger
C Where only some of the magnetic domains are pointing in the same direction,
the magnetic field is weaker
D Where all of the magnetic domains are pointing in the opposite direction, the
magnetic field is weaker - Answer C
The strength of an electromagnetic field is
A Determined by the magnitude of the magnetomotive force
B Determined by number of valence electrons in the wire
C Determined by the number of valence electrons in the metal bar
D Determined by the magnitude of the mass - Answer A
The magnetic field
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