FCC Technician Exam Question Pool.   Subelement 3AE.
Electrical Principals.     2 Questions.


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3E 2.1   D
What is meant by the term RESISTANCE?

 A. The opposition to the flow of current in an
    electrical circuit containing inductance.
 B. The opposition to the flow of current in an
    electrical circuit containing capacitance.
 C. The opposition to the flow of current in an
    electrical circuit containing reactance.
 D. The opposition to the flow of current in an
    electrical circuit that does not contain reactance.


3E 2.2   D
What is the primary function of a Resistor?

 A. To store an electric charge.
 B. To store a magnetic field.
 C. To match a high impedance source to a low impedance load.
 D. To limit the current in an electric circuit.


3E 2.3   A
What is a VARIABLE RESISTOR?

 A. A Resistor with a slide contact that
    makes the resistance adjustable
 B. A device that can transform a variable
    voltage into a constant voltage.
 C. A Resistor that changes value when
    an AC voltage is applied to it.
 D. A Resistor that changes value when heated.


3E 2.4   A
Why do Resistors generate heat?

 A. They convert electrical energy into heat energy.
 B. They exhibit reactance.
 C. Because of skin effect.
 D. To produce thermionic emission.


3E 4.1   D
What is an INDUCTOR?

 A. An electronic component that stores
    energy in an electric field.
 B. An electronic component that converts
    a high voltage to a lower voltage.
 C. An electronic component that opposes
    dc while allowing AC to pass.
 D. An electronic component that stores
    energy in a magnetic field.


3E 4.2   D
What factors determine the amount of Inductance in a coil?

 A. The type of material used in the core,
    the diameter of the core, and whether the
    coil is mounted horizontal or vertical.
 B. The diameter of the core, the number of
    of turns of wire used used to wind the
    core and the type of metal usedin the wire.
 C. The type of material used in the core, the
    number of turns used to wind the coil, and
    the frequency of the current through the coil.
 D. The type of material used in the core, the
    diameter of the core, the length of the coil,
    and the number of turns used to wind the coil.


3E 4.3   C
What are the electrical properties of an Inductor.

 A. An Inductor stores a charge electrostatically,
    and opposes a change in voltage.
 B. An Inductor stores a charge electrochemically,
    and opposes a change in current.
 C. An Inductor stores a charge electromagnetically,
    and opposes a change in current.
 D. An Inductor stores a charge electromechanically,
    and opposes a change in voltage.


3E 4.4   A
What is an Inductor CORE?

 A. The central portion of a coil; it may be made
    from air, iron, brass, or other material.
 B. A tight coil of wire used in a transformer.
 C. The insulating material placed
    between the plates of an Inductor.
 D. The point at which an Inductor
    is tapped to produce resonance.


3E 4.5   A
What are the component parts of a coil?

 A. The wire in the winding and the core material.
 B. The conductive plates and the insulating material.
 C. Two or more layers of silicon material.
 D. A donut shaped iron core and a layer of insulating tape.


3E 5.1   B
What is a CAPACITOR.

 A. An electronic component that stores
    energy in an magnetic field.
 B. An electronic component that stores
    energy in an electric field.
 C. An electronic component that converts
    a high voltage to a lower voltage.
 D. An electronic component that
    converts power into heat.


3E 5.2   A
What factors determine the amount of capacitance in a Capacitor?

 A. The dielectric constant of the material between
    the plates, the area of one side of one plate, the
    separation between the plates and the number of plates.
 B. The dielectric constant of the material between
    the plates, the number of plates, and the
    diameter of the leads connected to the plates
 C. The number of plates, the spacing between the plates
    and whether the material is N type or P type.
 D. The dielectric constant of the material between the plates,
    the area of one side of one plate, the number of plates
    and the type of material used for the protective coating.


3E 5.3   D
What are the electrical properties of a Capacitor?

 A. A Capacitor stores a charge electrochemically,
    and opposes a change in current.
 B. A Capacitor stores a charge electromagnetically,
    and opposes a change in current.
 C. A Capacitor stores a charge electromechanically,
    and opposes a change in voltage.
 D. A Capacitor stores a charge electrostatically,
    and opposes a change in voltage.


3E 5.4   D
What is a Capacitor DIELECTRIC?

 A. The insulating material used for the plates.
 B. The conducting material used between the plates.
 C. The Ferrite material that he plates are mounted on.
 D. The insulating material between the plates.


3E 5.5   A
What are the component parts of a Capacitor?

 A. Two or more conducting plates with
    an insulating material between them.
 B. The wire used in the winding and the core material.
 C. Two or more layers of silicon material.
 D. Two insulating plates with a
    conductive material between them.


3E 7.1   A
What is an OHM?

 A. The basic unit of resistance.
 B. The basic unit of capacitance.
 C. The basic unit of inductance.
 D. The basic unit of admittance.


3E 7.3   D
What is the unit measurement of Resistance?

 A. Volt.
 B. Ampere.
 C. Joule.
 D. Ohm.


3E 8.1   A
What is a MICROFARAD?

 A. A basic unit of capacitance equal to 10^(-6)Farads.
 B. A basic unit of capacitance equal to 10^(-12) Farads.
 C. A basic unit of capacitance equal to 10^(-2) Farads.
 D. A basic unit of capacitance equal to 10^(+6) Farads.


3E 8.2   B
What is a PICOFARAD?

 A. A basic unit of capacitance equal to 10^(-6) Farads.
 B. A basic unit of capacitance equal to 10^(-12) Farads.
 C. A basic unit of capacitance equal to 10^(-2) Farads.
 D. A basic unit of capacitance equal to 10^(+6) Farads.


3E 8.3   B
What is a FARAD?

 A. A basic unit of resistance.
 B. A basic unit of capacitance.
 C. A basic unit of inductance.
 D. A basic unit of admittance.


3E 8.4   A
What is the basic unit of Capacitance?

 A. Farad.
 B. Ohm.
 C. Volt.
 D. Ampere.


3E 9.1   D
What is a MICROHENRY?

 A. A basic unit of inductance equal to 10^(-12) Henrys.
 B. A basic unit of inductance equal to 10^(-3) Henrys.
 C. A basic unit of inductance equal to 10^(+6) Henrys.
 D. A basic unit of inductance equal to 10^(-6) Henrys.


3E 9.2   C
What is a MILIHENRY?    

 A. A basic unit of inductance equal to 10^(-6) Henrys.
 B. A basic unit of inductance equal to 10^(-12) Henrys.
 C. A basic unit of inductance equal to 10^(-3) Henrys.
 D. A basic unit of inductance equal to 10^(+6) Henrys.


3E 9.3   C
What is a HENRY?

 A. A basic unit of resistance.
 B. A basic unit of capacitance.
 C. A basic unit of inductance.
 D. A basic unit of admittance.


3E 9.4   D
What is the basic unit of Inductance?

 A. Coulomb.
 B. Farad
 C. Ohm.
 D. Henry.


3E 11.1   A
How is the current in a DC circuit calculated
when the voltage and resistance are known?

 A. I = E / R.
 B. P = I x E.
 C. I = R x E.
 D. I = E x R.


3E 11.2   C
What is the input resistance of a load when a
12 volt battery supplies 0.25 amperes to it?

 A. 0.02 ohms.
 B. 3 ohms.
 C. 48 ohms.
 D. 480 ohms.


3E 11.3   D
The product of the current and what force
gives the electrical power in a circuit?

 A. Magnetomotive force.
 B. Centripetal force.
 C. Electrochemical force.
 D. Electromotive force.


3E 11.4   A
What is OHM'S LAW?

 A. A mathmatical relationship between resistance,
    current and applied voltage in a curcuit.
 B. A mathmatical relationship between current,
    resistance and power in a curcuit.
 C. A mathmatical relationship between current,
    voltage and power in a curcuit.
 D. A mathmatical relationship between resistance,
    voltage and power in a curcuit.


3E 11.5   B
What is the input resistance of a load when a
12 volt battery supplies 0.15 amperes to it?

 A.   8 Ohms.
 B.  80 Ohms.
 C. 100 Ohms.
 D. 800 Ohms.


3E 12.2   C
In a series circuit composed of a voltage
source and several Resistors, what determines
the voltage drop across any particular Resistor?

 A. It is equal to the source voltage.
 B. It is equal to the source voltage divided by the
    number of series Resistors in the circuit.
 C. The larger the Resistors value, the greater
    the voltage drop across that Resistor.
 D. The smaller the Resistors value, the greater
    the voltage drop across that Resistor.


3E 13.4   B
How is power calculated when the 
current and voltage in a circuit are known?

 A. E = I x R.
 B. P = I x E.
 C. P = I^2 / R.
 D. P = E / I.


3E 14.8   D
When 120 Volts is measured across a 4700 Ohm Resistor,
how much current is flowing through it?

 A. 39 Amperes.
 B. 3.9 Amperes
 C. 0.26 Amperes.
 D. 0.026 Amperes


3E 14.9   D
When 120 Volts is measured across a 47000 Ohm Resistor,
how much current is flowing through it?

 A. 392 A.
 B. 39.2 A.
 C. 26 mA.
 D. 2.6 mA.


3E 14.10   A
When 12 Volts is measured across a 4700 Ohm Resistor,
approximately how much current is flowing through it?

 A. 2.6 mA.
 B. 26 mA. 
 C. 39.3 A.
 D. 392 A.


3E 14.11   A
When 12 Volts is measured across a 4700 Ohm Resistor,
approximately how much current is flowing through it?

 A. 255 uA.
 B. 255 mA.
 C. 3917 mA.
 D. 3917 A.


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End of Subelement 3AE.