US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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1. - G0A05

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

Select	Answer
A	All these choices are correct
B	Secure written permission from your neighbors to operate above the controlled MPE limits
C	File an Environmental Impact Statement (EIS-97) with the FCC
D	Take action to prevent human exposure to the excessive RF fields

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	The generator should be operated in a well-ventilated area
B	The generator must be insulated from ground
C	All these choices are correct
D	Fuel should be stored near the generator for rapid refueling in case of an emergency

3. - G1A09

Which of the following frequencies is within the General class portion of the 15-meter band?

Select	Answer
A	21300 kHz
B	24900 kHz
C	18155 kHz
D	14250 kHz

4. - G1B10

What is the power limit for beacon stations?

Select	Answer
A	200 watts PEP output
B	20 watts PEP output
C	10 watts PEP output
D	100 watts PEP output

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	1200 baud
B	300 baud
C	56 kilobaud
D	19.6 kilobaud

6. - G1D11

What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

Select	Answer
A	They must have a letter from the FCC showing they once held an amateur or commercial license
B	Contact the FCC to have the license reinstated
C	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
D	There are no requirements other than being able to show a copy of the expired license

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 3
B	Region 1
C	Region 2
D	Region 4

8. - G2A09

Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

Select	Answer
A	Lower sideband is more efficient than upper sideband at these frequencies
B	It is commonly accepted amateur practice
C	Lower sideband is the only sideband legal on these frequency bands
D	Because it is fully compatible with an AM detector

9. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	Only a person holding an FCC-issued amateur operator license
B	Any control operator when normal communication systems are operational
C	Only a RACES net control operator
D	A person holding an FCC-issued amateur operator license or an appropriate government official

10. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	SK
B	BK
C	KN
D	AR

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	America, Boston, Canada, Denmark
B	Alpha, Bravo, Charlie, Delta
C	Able, Baker, Charlie, Dog
D	Adam, Boy, Charles, David

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Approximately 14.110 MHz to 14.113 MHz
B	Anywhere in the voice portion of the band
C	Approximately 14.074 MHz to 14.077 MHz
D	Anywhere in the CW portion of the band

13. - G3A13

What does the A-index measure?

Select	Answer
A	The amount of polarization of the Sun’s electric field
B	The long-term stability of Earth’s geomagnetic field
C	The solar radio flux at Boulder, Colorado
D	The relative position of sunspots on the surface of the Sun

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They are amplified by interaction with the ionosphere
B	They pass through the ionosphere
C	They are refracted and trapped in the ionosphere to circle Earth
D	They are refracted back to Earth

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Phone signals have high intelligibility
B	Signals have a fluttering sound
C	Scatter propagation occurs only at night
D	There are very large, sudden swings in signal strength

16. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To reduce power consumption when operating from batteries
B	To reduce the transmitter power when driving a linear amplifier
C	To reduce excessive audio level on strong signals
D	To prevent receiver overload from strong incoming signals

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The attenuated RF output of the transmitter
B	An external RF oscillator
C	The local oscillator of the transmitter
D	The transmitter balanced mixer output

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	Insulated wire has been used for the ground wire
B	The ground wire has high impedance on that frequency
C	The ground rod is resonant
D	Flat braid rather than round wire has been used for the ground wire

19. - G4D08

What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

Select	Answer
A	7.1765 MHz to 7.1795 MHz
B	7.178 MHz to 7.184 MHz
C	7.178 MHz to 7.181 MHz
D	7.175 MHz to 7.178 MHz

20. - G4E08

In what configuration are the individual cells in a solar panel connected together?

Select	Answer
A	Full-wave bridge
B	Shunt
C	Series-parallel
D	Bypass

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	X
B	B
C	Z
D	Y

22. - G5B04

How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	2.4 watts
B	24 watts
C	6 watts
D	60 watts

23. - G5C11

What is the inductance of a circuit with a 20-millihenry inductor connected in series with a 50-millihenry inductor?

Select	Answer
A	14.3 millihenries
B	70 millihenries
C	7 millihenries
D	1,000 millihenries

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

Select	Answer
A	0.7 volts
B	1.0 volts
C	0.3 volts
D	0.1 volt

25. - G6B01

What determines the performance of a ferrite core at different frequencies?

Select	Answer
A	The ratio of outer diameter to inner diameter
B	Its thickness
C	Its conductivity
D	The composition, or “mix,” of materials used

26. - G7A01

What is the function of a power supply bleeder resistor?

Select	Answer
A	It removes shock hazards from the induction coils
B	It eliminates ground loop current
C	It discharges the filter capacitors when power is removed
D	It acts as a fuse for excess voltage

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class B
B	Class A
C	Class AB
D	Class C

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

Select	Answer
A	Mixing products are greatly reduced
B	The DSP filter is much more effective at VHF frequencies
C	A wide range of filter bandwidths and shapes can be created
D	Fewer digital components are required

29. - G8A02

What is the name of the process that changes the phase angle of an RF signal to convey information?

Select	Answer
A	Phase transformation
B	Phase convolution
C	Phase inversion
D	Phase modulation

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	3F1-F2
B	All these choices are correct
C	2F1-F2
D	5F1-3F2

31. - G8C05

In an ARQ mode, what is meant by a NAK response to a transmitted packet?

Select	Answer
A	Entire file received correctly
B	Packet was received without error
C	Request retransmission of the packet
D	Receiving station connected and ready for transmissions

32. - G9A02

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR increases loss in a lossy transmission line
B	High SWR reduces the relative effect of transmission line loss
C	There is no relationship between transmission line loss and SWR
D	High SWR makes it difficult to measure transmission line loss

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	As high as possible above the ground
B	Parallel to the antenna element
C	On the surface or buried a few inches below the ground
D	At the center of the antenna

34. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Closer element spacing
B	Tapered-diameter elements
C	Loading coils in series with the element
D	Larger-diameter elements

35. - G9D06

Which of the following is an advantage of a log-periodic antenna?

Select	Answer
A	Higher gain per element than a Yagi antenna
B	Wide bandwidth
C	Harmonic suppression
D	Polarization diversity