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Installer Technician Practice Questions and Answers (100% Pass)
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Installer Technician Practice Questions and Answers (100% Pass)
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©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Tuesday, July 30, 2024 12:01 AMInstaller Technician Practice Questions and Answers (100% Pass)
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.
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,©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Tuesday, July 30, 2024 12:01 AM
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
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, ©PREP4EXAMS@2024 [REAL-EXAM-DUMPS] Tuesday, July 30, 2024 12:01 AM
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) = _____. - ✔️✔️180 x 10^-6
(75 x 10^3) + (2.5 x 10^4) = ____. - ✔️✔️100 x 10^3
What are the three basic elements of an electrical circuit? - ✔️✔️A power source, a load,
and the connecting conductors.
The power source - ✔️✔️Is the part of an electrical circuit that provides a difference of
potential.
The load - ✔️✔️Is the part of the electrical circuit that uses the electrical energy provided
by the power source to carry out some desired function.
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