Installer Technician Exam 2023 with complete solution
20 milliamperes is the same as ________. (Remember, 1 milliampere = 0.001
ampere.)
0.02 amperes
The orbital shell that has a maximum electron capacity of 18 electrons is the
___________ shell.
Third
A semiconductor material
Has four valence electrons.
The major factor for determining whether a particular element is a conductor, a
semiconductor, or an insulator is
The number of electrons in the valence shell.
Elements that are called conductors
Have very few valence electrons.
The term voltage normally refers to
The measurement of the difference in potential between two charges.
The ampere
Indicates how many coulombs pass a given point during 1 second.
Electric current is actually produced by
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?
The attraction between the positive nucleus and the negative electron.
5 kilovolts is the same as
5 kV.
To create an electromagnet,
Wrap a coil of insulated wire around an iron bar and pass an electric current through the
wire.
Magnetism
Was discovered when the Greeks noticed that magnetite always aligned itself in a north
and south direction.
In a magnetic material,
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
Determined by the magnitude of the magnetomotive force (mmf).
The magnetic field
Created by a straight piece of wire is weaker than that created by forming loops of wire.
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
A permanent-magnet loudspeaker
, 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
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)
Electromagnet.
(-25) + (42) + (-62) + (20) =
-25
(-17) - (-34) =
17
(17) x (-19) =
-323
-49/-7 =
7
(20) / (-4) + (-2) x (-10) - (-2) x (7) =
29
3 6/9 + 6 1/3 + 9 5/9 =
19 5/9
4/7 x 9 4/11 =
5 27/77
7 3/8 divided by 7 1/4 =
1 1/58
13 X 0.123 =
0.99999
0.5349 divided by 0.1420 =
3.7669014
Which of the following is a true axiom?
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?
E/R.
The square of 7 = _____.
49
The square root of 81 = _____.
9
0.00004 = ______ x 10 to the power of ______.
4, -5
(75 x 10^3)+(25 x 10^4) = ____.
32.5 x 10^4
(480 x 10^-5) / (60 x 10^-3) = _____.
8 x 10^-2
10 to the power of -3 has a metric prefix of ______.
Milli
(250 x 10^-6) - (7 x 10^-5) = _____.
20 milliamperes is the same as ________. (Remember, 1 milliampere = 0.001
ampere.)
0.02 amperes
The orbital shell that has a maximum electron capacity of 18 electrons is the
___________ shell.
Third
A semiconductor material
Has four valence electrons.
The major factor for determining whether a particular element is a conductor, a
semiconductor, or an insulator is
The number of electrons in the valence shell.
Elements that are called conductors
Have very few valence electrons.
The term voltage normally refers to
The measurement of the difference in potential between two charges.
The ampere
Indicates how many coulombs pass a given point during 1 second.
Electric current is actually produced by
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?
The attraction between the positive nucleus and the negative electron.
5 kilovolts is the same as
5 kV.
To create an electromagnet,
Wrap a coil of insulated wire around an iron bar and pass an electric current through the
wire.
Magnetism
Was discovered when the Greeks noticed that magnetite always aligned itself in a north
and south direction.
In a magnetic material,
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
Determined by the magnitude of the magnetomotive force (mmf).
The magnetic field
Created by a straight piece of wire is weaker than that created by forming loops of wire.
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
A permanent-magnet loudspeaker
, 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
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)
Electromagnet.
(-25) + (42) + (-62) + (20) =
-25
(-17) - (-34) =
17
(17) x (-19) =
-323
-49/-7 =
7
(20) / (-4) + (-2) x (-10) - (-2) x (7) =
29
3 6/9 + 6 1/3 + 9 5/9 =
19 5/9
4/7 x 9 4/11 =
5 27/77
7 3/8 divided by 7 1/4 =
1 1/58
13 X 0.123 =
0.99999
0.5349 divided by 0.1420 =
3.7669014
Which of the following is a true axiom?
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?
E/R.
The square of 7 = _____.
49
The square root of 81 = _____.
9
0.00004 = ______ x 10 to the power of ______.
4, -5
(75 x 10^3)+(25 x 10^4) = ____.
32.5 x 10^4
(480 x 10^-5) / (60 x 10^-3) = _____.
8 x 10^-2
10 to the power of -3 has a metric prefix of ______.
Milli
(250 x 10^-6) - (7 x 10^-5) = _____.
