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ELE2E
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1992-01-26
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FCC NOVICE Exam Question Pool. Subelement 2E.
Electrical Principles. 4 Questions.
---------------------------------------------------
2E 1-1.1 C
Your receiver dial is calibrated in megahertz and
shows a signal at 1200 MHz. At what frequency would
a dial calibrated in gigahertz show the signal?
A. 1,200,000 GHz
B. 12 GHz
C. 1.2 GHz
D. 0.0012 GHz
2E 1-2.1 B
Your receiver dial is calibrated in kilohertz and shows
a signal at 7125 kHz. At what frequency would a dial
calibrated in megahertz show the signal?
A. 0.007125 MHz
B. 7.125 MHz
C. 71.25 MHz
D. 7,125,000 MHz
2E 1-2.2 D
Your receiver dial is calibrated in gigahertz and shows
a signal at 1.2 GHz. At what frequency would a dial
calibrated in megahertz show the same signal?
A. 1.2 MHz
B. 12 MHz
C. 120 MHz
D. 1200 MHz
2E 1-3.1 B
Your receiver dial is calibrated in megahertz and shows
a signal at 3.525 MHz. At what frequency would a dial
calibrated in kilohertz show the signal?
A. 0.003525 kHz
B. 3525 kHz
C. 35.25 kHz
D. 3,525,000 kHz
2E 1-3.2 D
Your receiver dial is calibrated in kilohertz and shows
a signal at 3725 kHz. At what frequency would a dial
calibrated in Hertz show the same signal?
A. 3,725 Hz
B. 3.725 Hz
C. 37.25 Hz
D. 3,725,000 Hz
2E 1-4.1 B
How long (in meters) is an antenna that is 400 centimeters
long?
A. 0.0004 meters
B. 4 meters
C. 40 meters
D. 40,000 meters
2E 1-5.1 C
What reading will be displayed on a meter calibrated in amperes
when it is being used to measure a 3000-milliampere current?
A. 0.003 amperes
B. 0.3 amperes
C. 3 amperes
D. 3,000,000 amperes
2E 1-5.2 C
What reading will be displayed on a meter calibrated in volts
when it is being used to measure a 3500-millivolt potential?
A. 350 volts
B. 35 volts
C. 3.5 volts
D. 0.35 volts
2E 1-6.1 B
How many farads is 500,000 microfarads?
A. 0.0005 farads
B. 0.5 farads
C. 500 farads
D. 500,000,000 farads
2E 1-7.1 B
How many microfarads is 1,000,000 picofarads?
A. 0.001 microfarads
B. 1 microfarad
C. 1,000 microfarads
D. 1,000,000,000 microfarads
2E 2-1.1 D
What is the term used to describe the flow of electrons in an
electric circuit?
A. Voltage
B. Resistance
C. Capacitance
D. Current
2E 2-2.1 C
What is the basic unit of electric current?
A. The volt
B. The watt
C. The ampere
D. The ohm
2E 3-1.1 A
What supplies the force that will cause electrons to flow
through a circuit?
A. Electromotive force, or voltage
B. Magnetomotive force, or inductance
C. Farad force, or capacitance
D. Thermodynamic force, or entropy
2E 3-1.2 D
The pressure in a water pipe is comparable to what force in an
electrical circuit?
A. Current
B. Resistance
C. Gravitation
D. Voltage
2E 3-1.3 C
An electric circuit must connect to two terminals of a
voltage source. What are these two terminals called?
A. The north and south poles
B. The positive and neutral terminals
C. The positive and negative terminals
D. The entrance and exit terminals
2E 3-2.1 A
What is the basic unit of voltage?
A. The volt
B. The watt
C. The ampere
D. The ohm
2E 4.1 C
List at least three good electrical conductors.
A. Copper, gold, mica
B. Gold, silver, wood
C. Gold, silver, aluminum
D. Copper, aluminum, paper
2E 5.1 A
List at least four good electrical insulators.
A. Glass, air, plastic, porcelain
B. Glass, wood, copper, porcelain
C. Paper, glass, air, aluminum
D. Plastic, rubber, wood, carbon
2E 6-1.1 D
There is a limit to the electric current that can pass through
any material. What is this current limiting called?
A. Fusing
B. Reactance
C. Saturation
D. Resistance
2E 6-1.2 A
What is an electrical component called that opposes electron
movement through a circuit?
A. A resistor
B. A reactor
C. A fuse
D. An oersted
2E 6-2.1 D
What is the basic unit of resistance?
A. The volt
B. The watt
C. The ampere
D. The ohm
2E 7.1 C
What electrical principle relates voltage, current and resistance
in an electric circuit?
A. Ampere's Law
B. Kirchhoff's Law
C. Ohm's Law
D. Tesla's Law
2E 7.2 C
There is a 2-amp current through a 50-ohm resistor. What is the
applied voltage?
A. 0.04 volts
B. 52 volts
C. 100 volts
D. 200 volts
2E 7.3 B
If 200 volts is applied to a 100-ohm resistor, what is the current
through the resistor?
A. 0.5 amps
B. 2 amps
C. 50 amps
D. 20000 amps
2E 7.4 C
There is a 3-amp current through a resistor and we know that the
applied voltage is 90 volts. What is the value of the resistor?
A. 0.03 ohms
B. 10 ohms
C. 30 ohms
D. 2700 ohms
2E 8.1 D
What is the term used to describe the ability to do work?
A. Voltage
B. Power
C. Inertia
D. Energy
2E 8.2 A
What is converted to heat and light in an electric light bulb?
A. Electrical energy
B. Electrical voltage
C. Electrical power
D. Electrical current
2E 9-1.1 C
What term is used to describe the rate of energy consumption?
A. Energy
B. Current
C. Power
D. Voltage
2E 9-1.2 C
You have two lamps with different wattage light bulbs in them.
How can you determine which bulb uses electrical energy faster?
A. The bulb that operates from the higher voltage will consume
energy faster
B. The physically larger bulb will consume energy faster
C. The bulb with the higher wattage rating will consume energy
faster
D. The bulb with the lower wattage rating will consume energy
faster
2E 9-2.1 B
What is the basic unit of electrical power?
A. Ohm
B. Watt
C. Volt
D. Ampere
2E 10.1 C
What is the term for an electrical circuit in which there can
be no current?
A. A closed circuit
B. A short circuit
C. An open circuit
D. A hyper circuit
2E 11.1 D
What is the term for a failure in an electrical circuit that
causes excessively high current?
A. An open circuit
B. A dead circuit
C. A closed circuit
D. A short circuit
2E 12-1. B
What is the term used to describe a current that flows only
in one direction?
A. Alternating current
B. Direct current
C. Periodic current
D. Pulsating current
2E 12-2. A
What is the term used to describe a current that flows first in
one direction, then in the opposite direction, over and over?
A. Alternating current
B. Direct current
C. Negative current
D. Positive current
2E 12-3. D
What is the term for the number of complete cycles of an
alternating waveform that occur in one second?
A. Pulse repetition rate
B. Hertz
C. Frequency per wavelength
D. Frequency
2E 12-3. A
A certain ac signal makes 2000 complete cycles in one second.
What property of the signal does this number describe?
A. The frequency of the signal
B. The pulse repetition rate of the signal
C. The wavelength of the signal
D. The hertz per second of the signal
2E 12-3. A
What is the basic unit of frequency?
A. The hertz
B. The cycle
C. The kilohertz
D. The megahertz
2E 12-4. B
What range of frequencies are usually called audio
frequencies?
A. 0 to 20 Hz
B. 20 to 20,000 Hz
C. 200 to 200,000 Hz
D. 10,000 to 30,000 Hz
2E 12-4. A
A signal at 725 Hz is in what frequency range?
A. Audio frequency
B. Intermediate frequency
C. Microwave frequency
D. Radio frequency
2E 12-4. B
Why do we call signals in the range 20 Hz to 20,000 Hz audio
frequencies?
A. Because the human ear rejects signals in this frequency range
B. Because the human ear responds to sounds in this frequency
range
C. Because frequencies in this range are too low for a radio to
detect
D. Because a radio converts signals in this range directly to
sounds the human ear responds to
2E 12-5. C
Signals above what frequency are usually called radio-frequency
signals?
A. 20 Hz
B. 2000 Hz
C. 20,000 Hz
D. 1,000,000 Hz
2E 12-5. B
A signal at 7125 kHz is in what frequency range?
A. Audio frequency
B. Radio frequency
C. Hyper-frequency
D. Super-high frequency
2E 13.1 C
What is the term for the distance an ac signal travels during
one complete cycle?
A. Wave velocity
B. Velocity factor
C. Wavelength
D. Wavelength per meter
2E 13.2 D
In the time it takes a certain radio signal to pass your
antenna, the leading edge of the wave travels 12 meters.
What property of the signal does this number refer to?
A. The signal frequency
B. The wave velocity
C. The velocity factor
D. The signal wavelength
--------------------------------------------------
End of Subelement 2E.