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. - G0A02

Which of the following is used to determine RF exposure from a transmitted signal?

Select	Answer
A	Its duty cycle
B	Its frequency
C	All these choices are correct
D	Its power density

2. - G0B02

According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?

Select	Answer
A	AWG number 16
B	AWG number 12
C	AWG number 8
D	AWG number 20

3. - G1A01

On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

Select	Answer
A	60 meters, 30 meters, 17 meters, and 12 meters
B	80 meters, 20 meters, 15 meters, and 10 meters
C	160 meters, 60 meters, 15 meters, and 12 meters
D	80 meters, 40 meters, 20 meters, and 15 meters

4. - G1B08

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications
B	Only when the contact is with amateurs licensed by a country which is a member of the International Amateur Radio Union, or by a territory possessed by such a country
C	Only when the contact is with amateurs licensed by a country which is a member of the United Nations, or by a territory possessed by such a country
D	Only when the foreign country has a formal third-party agreement filed with the FCC

5. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

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

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
B	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
C	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
D	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC

7. - G1E10

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

Select	Answer
A	A system of propagation beacon stations operates on those frequencies
B	These frequencies are set aside for emergency operations
C	These frequencies are set aside for bulletins from the FCC
D	A system of automatic digital stations operates on those frequencies

8. - G2A06

Which of the following is an advantage of using single sideband, as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Very high-fidelity voice modulation
B	Less subject to interference from atmospheric static crashes
C	Ease of tuning on receive and immunity to impulse noise
D	Less bandwidth used and greater power efficiency

9. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Acknowledge the station in distress and determine what assistance may be needed
B	Inform your local emergency coordinator
C	Immediately decrease power to avoid interfering with the station in distress
D	Immediately cease all transmissions

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Are you listening only for a specific station?”
B	“Are you busy?” or “Is this frequency in use?”
C	“Will you keep the frequency clear?”
D	“Are you operating full break-in?” or “Can you operate full break-in?”

11. - G2D01

What is the Volunteer Monitor Program?

Select	Answer
A	Amateur volunteers who conduct amateur licensing examinations
B	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
C	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
D	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters

12. - G2E13

What is another name for a Winlink Remote Message Server?

Select	Answer
A	Gateway
B	RJ-45
C	Terminal Node Controller
D	Printer/Server

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Improve high-latitude HF propagation
B	Degrade high-latitude HF propagation
C	Improve ground wave propagation
D	Degrade ground wave propagation

14. - G3B10

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the E region?

Select	Answer
A	180 miles
B	2,500 miles
C	1,200 miles
D	12,000 miles

15. - G3C02

What is meant by the term “critical frequency” at a given incidence angle?

Select	Answer
A	The highest frequency which is refracted back to Earth
B	The lowest frequency which is refracted back to Earth
C	The frequency at which the signal-to-noise ratio is 6 dB
D	The frequency at which the signal-to-noise ratio approaches unity

16. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

Select	Answer
A	Interference from impulse noise will be eliminated
B	It may be possible to reduce or eliminate interference from other signals
C	More stations can be accommodated within a given signal passband
D	Accidental out-of-band operation can be prevented

17. - G4B13

Which of the following can be measured with an antenna analyzer?

Select	Answer
A	Gain of a directional antenna
B	Impedance of coaxial cable
C	Power output from a transmitter
D	Front-to-back ratio of an antenna

18. - G4C07

Why should soldered joints not be used in lightning protection ground connections?

Select	Answer
A	A soldered joint will likely be destroyed by the heat of a lightning strike
B	Solder has too high a dielectric constant to provide adequate lightning protection
C	Solder flux will prevent a low conductivity connection
D	All these choices are correct

19. - G4D10

How close to the lower edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 3 kHz below the edge of the segment
B	At least 1 kHz above the edge of the segment
C	At least 1 kHz below the edge of the segment
D	At least 3 kHz above the edge of the segment

20. - G4E07

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

Select	Answer
A	All these choices are correct
B	The fuel delivery system
C	The control computers
D	The battery charging system

21. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Ampere
B	Farad
C	Ohm
D	Siemens

22. - G5B13

What is the output PEP of an unmodulated carrier if the average power is 1060 watts?

Select	Answer
A	2120 watts
B	1500 watts
C	530 watts
D	1060 watts

23. - G5C08

What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

Select	Answer
A	576.9 nanofarads
B	10.750 nanofarads
C	1,733 picofarads
D	3,583 picofarads

24. - G6A10

Which element of a vacuum tube regulates the flow of electrons between cathode and plate?

Select	Answer
A	Control grid
B	Suppressor grid
C	Trigger electrode
D	Screen grid

25. - G6B07

Which of the following describes a type N connector?

Select	Answer
A	A nickel plated version of the PL-259
B	A small bayonet connector used for data circuits
C	A low noise figure VHF connector
D	A moisture-resistant RF connector useful to 10 GHz

26. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	90 degrees
B	180 degrees
C	270 degrees
D	360 degrees

27. - G7B03

Which of the following describes the function of a two-input AND gate?

Select	Answer
A	Output is high only when both inputs are high
B	Output is low when either or both inputs are high
C	Output is high when either or both inputs are low
D	Output is low only when both inputs are high

28. - G7C13

What term specifies a filter’s maximum ability to reject signals outside its passband?

Select	Answer
A	Ultimate rejection
B	Insertion loss
C	Rolloff
D	Notch depth

29. - G8A12

What is QPSK modulation?

Select	Answer
A	Modulation in which digital data is transmitted using 0-, 90-, 180- and 270-degrees phase shift to represent pairs of bits
B	Modulation using quadra-pole sideband keying to generate spread spectrum signals
C	Modulation using Fast Fourier Transforms to generate frequencies at the first, second, third, and fourth harmonics of the carrier frequency to improve noise immunity
D	Modulation using quasi-parallel to serial conversion to reduce bandwidth

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Even-order
B	Intercept point
C	Second harmonics
D	Odd-order

31. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	On and off
B	Mark and space
C	Dot and dash
D	High and low

32. - G9A10

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

Select	Answer
A	5:1
B	1:5
C	1:2
D	2:1

33. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It steadily increases
B	It is unaffected by the location of the feed point
C	It steadily decreases
D	It peaks at about 1/8 wavelength from the end

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The ratio of forward gain to dipole gain
B	The relative position of the driven element with respect to the reflectors and directors
C	The power radiated in the major lobe compared to that in the opposite direction
D	The number of directors versus the number of reflectors

35. - G9D02

What is the feed point impedance of an end-fed half-wave antenna?

Select	Answer
A	Very low
B	Approximately 300 ohms
C	Very high
D	Approximately 50 ohms