NCTI Installer Tech Exam with correct detailed ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
answers
Terms in this set (200) ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Original
Which orbital shell has a maximum electron capacity of 18 electrons?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
The third shell
||\\|//|| ||\\|//||
Why are semiconductor materials not good conductors nor good insulators?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
The valence shells are only half-filled
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Which of the following best describes a conductor?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Elements that have a small number of electrons in the Valence shell ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Which of the following best describes the relationship between an ampere and a coulomb?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
The number of amperes is equivalent to the number of coulombs passing a given point
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
during one second ||\\|//|| ||\\|//||
How is electric current produced?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
,From the transfer of energy from valence electron to valence electron because 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?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
The attraction between the positive and the negative electron
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
We have an expert-written solution to this problem!
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
What is 5 kV equivalent to? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
5,000 V ||\\|//||
Elements without the production or movement of free electrons are considered? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Insulators
What best describes the type of electron flow called random drift?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Free electrons that change orbits in a random manner, resulting in no charge
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
What is the effective speed of electric current?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
186,000 miles per second ||\\|//|| ||\\|//|| ||\\|//||
,What is another way to create an electromagnet besides stroking a piece of magnetic metal,
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
such as a piece of iron with another magnet?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Wrap a coil of insulated wire around an iron bar and pass an electric current through the
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
wire
Which of the following is true about magnetism? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Magnetism was discovered when the Greeks noticed that certain stones attract iron ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
What happens in a magnetic material where some of the magnetic domains are pointing in
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
the same direction?
||\\|//|| ||\\|//|| ||\\|//||
The magnetic field is weaker
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
We have an expert-written solution to this problem!
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
What determines the strength of an electromagnetic field?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
An electromagnetic field is determined by the magnitude of mmf
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Which of the following is true when talking about overall magnetic field? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
When created by a straight piece of wire, the overall magnetic field is weaker than that
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
created by forming loops of wire ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Which of the following is one of the five basic rules that flux lines follow?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Flux lines 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? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Alike, repel ||\\|//||
Which of the following is true about a permanent-magnet loudspeaker?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
It has a cone that moves back and forth in relation to the varying current of the original
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
sound
What does the left-hand rule for electromagnetism in a wire state?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
If you wrap your 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 ||\\|//||
Why are some materials magnetic while others are not?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Because in most materials, half of the electrons in each atom spin in one direction while
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
the other half of the electrons spin in the opposite direction, canceling each other, which
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
results in no creation of a magnetic field for the atom ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
(-25) + (42) + (-62) +(20) = ?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
-25
answers
Terms in this set (200) ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Original
Which orbital shell has a maximum electron capacity of 18 electrons?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
The third shell
||\\|//|| ||\\|//||
Why are semiconductor materials not good conductors nor good insulators?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
The valence shells are only half-filled
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Which of the following best describes a conductor?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Elements that have a small number of electrons in the Valence shell ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Which of the following best describes the relationship between an ampere and a coulomb?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
The number of amperes is equivalent to the number of coulombs passing a given point
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
during one second ||\\|//|| ||\\|//||
How is electric current produced?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
,From the transfer of energy from valence electron to valence electron because 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?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
The attraction between the positive and the negative electron
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
We have an expert-written solution to this problem!
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
What is 5 kV equivalent to? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
5,000 V ||\\|//||
Elements without the production or movement of free electrons are considered? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Insulators
What best describes the type of electron flow called random drift?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Free electrons that change orbits in a random manner, resulting in no charge
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
What is the effective speed of electric current?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
186,000 miles per second ||\\|//|| ||\\|//|| ||\\|//||
,What is another way to create an electromagnet besides stroking a piece of magnetic metal,
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
such as a piece of iron with another magnet?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Wrap a coil of insulated wire around an iron bar and pass an electric current through the
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
wire
Which of the following is true about magnetism? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Magnetism was discovered when the Greeks noticed that certain stones attract iron ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
What happens in a magnetic material where some of the magnetic domains are pointing in
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
the same direction?
||\\|//|| ||\\|//|| ||\\|//||
The magnetic field is weaker
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
We have an expert-written solution to this problem!
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
What determines the strength of an electromagnetic field?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
An electromagnetic field is determined by the magnitude of mmf
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Which of the following is true when talking about overall magnetic field? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
When created by a straight piece of wire, the overall magnetic field is weaker than that
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
created by forming loops of wire ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Which of the following is one of the five basic rules that flux lines follow?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Flux lines 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? ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Alike, repel ||\\|//||
Which of the following is true about a permanent-magnet loudspeaker?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
It has a cone that moves back and forth in relation to the varying current of the original
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
sound
What does the left-hand rule for electromagnetism in a wire state?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
If you wrap your 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 ||\\|//||
Why are some materials magnetic while others are not?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
Because in most materials, half of the electrons in each atom spin in one direction while
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
the other half of the electrons spin in the opposite direction, canceling each other, which
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
results in no creation of a magnetic field for the atom ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
(-25) + (42) + (-62) +(20) = ?
||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//|| ||\\|//||
-25
