home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
HAM Radio 3
/
hamradioversion3.0examsandprograms1992.iso
/
exam
/
techexam
/
pool3ae.
< prev
next >
Wrap
Text File
|
1991-11-03
|
11KB
|
384 lines
FCC Technician Exam Question Pool - Subelement 3AE
(Valid 7/1/90 thru 10/31/92)
ELECTRICAL PRINCIPLES (2 Exam questions)
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
3E-1-1.1 D
What is meant by the term RESISTANCE?
A. The opposition to the flow of current in an
electrical circuit containing inductors.
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-1-2.1 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-1-2.2 D
What is the unit measurement of Resistance?
A. Volt.
B. Ampere.
C. Joule.
D. Ohm.
3E-1-3.1 B
Two equal-value resistors are connected in series.
How does the total resistance of this combination
compare with the value of either resistor by itself?
A. The total resistance is half the value of either resistor.
B. The total resistance is twice the value of either resistor.
C. The total resistance is the same as the value of either
resistor.
D. The total resistance is the square of the value of either
resistor.
3E-1-3.2 D
How does the total resistance of a string of series-connected
resistors compare to the values of the individual resistors?
A. The total resistance is the square of the sum of all the
individual resistor values.
B. The total resistance is the square root of the sum of
the individual resistor values.
C. The total resistance is the sum of the squares of the
individual resistor values.
D. The total resistance is the sum of all the
individual resistor values.
3E-1-4.1 B
Two equal-value resistors are connected in parallel.
How does the total resistance of this combination
compare with the value of either resistor by itself?
A. The total resistance is twice the value of either resistor.
B. The total resistance is half the value of either resistor.
C. The total resistance is the square of the value of either
resistor.
D. The total resistance is the same as the value of either
resistor.
3E-1-4.2 C
How does the total resistance of a string of parallel-connected
resistors compare to the values of the individual resistors?
A. The total resistance is the square of the sum of the
resistor values.
B. The total resistance is more than the highest-value resistor
is the combination.
C. The total resistance is less than the smallest-value resistor
in the combination.
D. The total resistance is the same as the highest-value resistor
in the combination.
3E-2.1 D
What is OHM'S LAW?
A. A mathematical relationship between resistance,
voltage and power in a circuit.
B. A mathematical relationship between current,
resistance and power in a circuit.
C. A mathematical relationship between current,
voltage and power in a circuit.
D. A mathematical relationship between resistance,
current and applied voltage in a circuit.
3E-2.2 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-2.3 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-2.4 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-2.5 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-2.6 D
When 120 Volts is measured across a 4700 Ohm Resistor,
approximately how much current is flowing through it?
A. 39 Amperes.
B. 3.9 Amperes
C. 0.26 Amperes.
D. 0.026 Amperes
3E-2.7 D
When 120 Volts is measured across a 47000 Ohm Resistor,
approximately how much current is flowing through it?
A. 392 A.
B. 39.2 A.
C. 26 mA.
D. 2.6 mA.
3E-2.8 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-2.9 A
When 12 Volts is measured across a 47000 Ohm Resistor,
approximately how much current is flowing through it?
A. 255 uA.
B. 255 mA.
C. 3917 mA.
D. 3917 A.
3E3-1.1 C
What is the term used to describe the ability of a
component to store energy in a magnetic field?
A. Admittance.
B. Capacitance.
C. Inductance.
D. Resistance.
3E-3-2.1 C
What is the basic unit of Inductance?
A. Coulomb.
B. Farad
C. Henry.
D. Ohm..
3E-3-2.2 C
What is a HENRY?
A. A basic unit of admittance.
B. A basic unit of capacitance.
C. A basic unit of inductance.
D. A basic unit of resistance.
3E-3-2.3 B
What is a MICROHENRY?
A. A basic unit of inductance equal to 10^(-12) Henrys.
B. A basic unit of inductance equal to 10^(-6) Henrys.
C. A basic unit of inductance equal to 10^(-3) Henrys.
D. A basic unit of inductance equal to 10^(+6) Henrys.
3E-3-2.4 C
What is a MILIHENRY?
A. A basic unit of inductance equal to 10^(-12) Henrys.
B. A basic unit of inductance equal to 10^(-6) Henrys.
C. A basic unit of inductance equal to 10^(-3) Henrys.
D. A basic unit of inductance equal to 10^(+6) Henrys.
3E-3-3.1 B
Two equal-value inductors are connected in series.
How does the total inductance of this combination
compare with the value of either inductor by itself?
A. The total inductance is half the value of either inductor.
B. The total inductance is twice the value of either inductor.
C. The total inductance is equal to the value of either inductor.
D. No comparison can be made without knowing the exact inductances.
3E-3-3.2 B
How does the total inductance of a string of series-connected
inductors compare to the values of the individual inductors?
A. The total inductance is equal to the average of all the
individual inductances.
B. The total inductance is equal to the sum of all of
the individual inductances.
C. The total inductance is the sum of the squares of the
individual inductances.
D. No comparison can be made without knowing the exact inductances.
3E-3-4.1 A
Two equal-value inductors are connected in parallel.
How does the total inductance of this combination
compare with the value of either inductor by itself?
A. The total inductance is half the value of either inductor.
B. The total inductance is twice the value of either inductor.
C. The total inductance is equal to the square of either
inductor.
D. No comparison can be made without knowing the exact inductances.
3E-3-4.2 B
How does the total inductance of a string of parallel-connected
inductors compare to the values of the individual inductors?
A. The total inductance is equal to the sum of the inductances
in the combination.
B. The total resistance is less than the smallest inductance value
in the combination.
C. The total inductance is equal to the average of the inductances
in the combination.
D. No comparison can be made without knowing the exact inductances.
3E-4-1.1 A
What is the term used to describe the ability of a component to store
energy in an electric field?
A. Capacitance.
B. Inductance.
C. Resistance.
D. Tolerance.
3E-4-2.1 A
What is the basic unit of Capacitance?
A. Farad.
B. Ohm.
C. Volt.
D. Ampere.
3E-4-2.2 B
What is a MICROFARAD?
A. A basic unit of capacitance equal to 10^(-12) Farads.
B. A basic unit of capacitance equal to 10^(-6)Farads.
C. A basic unit of capacitance equal to 10^(-2) Farads.
D. A basic unit of capacitance equal to 10^(+6) Farads.
3E-4-2.3 A
What is a PICOFARAD?
A. A basic unit of capacitance equal to 10^(-12) Farads.
B. A basic unit of capacitance equal to 10^(-6) Farads.
C. A basic unit of capacitance equal to 10^(-2) Farads.
D. A basic unit of capacitance equal to 10^(+6) Farads.
3E-4-2.4 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-4-3.1 C
Two equal-value capacitors are connected in series.
How does the total capacitance of this combination
compare with the value of either capacitor by itself?
A. The total capacitance is twice the value of either capacitor.
B. The total capacitance is equal to the value of either capacitor.
C. The total capacitance is half the value of either capacitor.
D. No comparison can be made without knowing the exact
capacitances.
3E-4-3.2 B
How does the total capacitance of a string of series-connected
capacitors compare to the values of the individual capacitors?
A. The total capacitance is equal to the sum of the capacitances
in the combination.
B. The total capacitance is less than the smallest value of capacitance.
C. The total capacitance is equal to the average of the capacitances
in the combination.
D. No comparison can be made without knowing the exact inductances.
3E-4-4.1 A
Two equal-value capacitors are connected in parallel.
How does the total capacitance of this combination
compare with the value of either capacitor by itself?
A. The total capacitance is twice the value of either capacitor.
B. The total capacitance is half the value of either capacitor.
C. The total capacitance is equal to the value of either capacitor.
D. No comparison can be made without knowing the exact capacitances.
3E-4-4.2 A
How does the total capacitance of a string of parallel-connected
capacitors compare to the values of the individual capacitors?
A. The total capacitance is equal to the sum of the capacitances
in the combination.
B. The total capacitance is less than the smallest value of
capacitance in the combination.
C. The total capacitance is equal to the average of the
capacitances in the combination.
D. No comparison can be made without knowing the exact capacitances.
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *