Exam (elaborations)
NCTI Installer Tech Multiple Choice Part 1 Question and answers 100% correct 2023
- Course
- Institution
NCTI Installer Tech Multiple Choice Part 1 Question and answers 100% correct 2023
[Show more]
Seller
Follow
Academia199
Reviews received
Content preview
NCTI Installer Tech Multiple Choice Part1
20 milliamperes is the same as _________ amperes.
A2
B 0.2
C 0.02
D 0.002 - correct 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 - correct answer C
A semiconductor material has ___ valence electron(s)
A1
B2
C3
D 4 - correct 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 - correct 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 - correct 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 - correct
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 - correct
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C The transfer of energy from positrons to positrons as a result of withdrawn charges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withdrawn charges - correct answer B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 - correct
answer D
5 kilovolts is the same as
A 50 kV
B 5 kV
C 0.5 mV
D 5 MV - correct 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 - correct 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 - correct 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 - correct 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 - correct answer A
The magnetic field
A Created by a straight piece of wire is stronger than that created by forming loops of
wire
B Created by an outlet is weaker than that created by a battery
C Created by a battery is weaker than that created by an outlet
D Created by a straight piece of wire is weaker than that created by forming loops of
wire - correct answer D
Flux lines
A Never curve around through the body of the magnet to form complete loops
B Always curve around through the body of the magnet to form half loops
C Always curve around through the body of the magnet to form complete loops
D Sometimes curve around through the body of the magnet to form half loops - correct
answer C
Magnetic poles that are ____ will ____ each other when those poles are near each
other.
A Alike, attract
B Dissimilar, repel
C Alike, have no affect on
D Alike, repel - correct answer D
A permanent-magnet loudspeaker
A Has a cone that moves back and forth in relation to the varying current of the original
sound
B Has a cone that stays put in relation to the varying current of the original sound
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Academia199. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now