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. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

Select	Answer
A	All these choices are correct
B	Post a copy of FCC Part 97.13 in the station
C	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
D	Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels

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 20
B	AWG number 12
C	AWG number 8
D	AWG number 16

3. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	12 meters
B	20 meters
C	160 meters
D	30 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 United Nations, or by a territory possessed by such a country
C	Only when the foreign country has a formal third-party agreement filed with the FCC
D	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

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	19.6 kilobaud
C	300 baud
D	56 kilobaud

6. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	180 days
B	For as long as your current license is valid
C	365 days
D	30 days

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	They must be for other licensed amateurs
B	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
C	They must relate to emergencies or disaster relief
D	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief

8. - G2A07

Which of the following statements is true of single sideband (SSB)?

Select	Answer
A	Only one sideband is transmitted; the other sideband and carrier are suppressed
B	SSB is the only voice mode authorized on the 20-, 15-, and 10-meter amateur bands
C	SSB is the only voice mode authorized on the 160-, 75-, and 40-meter amateur bands
D	Only one sideband and the carrier are transmitted; the other sideband is suppressed

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	Immediately decrease power to avoid interfering with the station in distress
C	Immediately cease all transmissions
D	Inform your local emergency coordinator

10. - G2C06

What does the term “zero beat” mean in CW operation?

Select	Answer
A	Matching the transmit frequency to the frequency of a received signal
B	Sending without error
C	Operating split to avoid interference on frequency
D	Matching the speed of the transmitting station

11. - G2D08

Why do many amateurs keep a station log?

Select	Answer
A	The FCC requires a log of all international contacts
B	To help with a reply if the FCC requests information about your station
C	The FCC requires a log of all international third-party traffic
D	The log provides evidence of operation needed to renew a license without retest

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	Anywhere in the CW portion of the band
D	Approximately 14.074 MHz to 14.077 MHz

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	At any point
B	At the summer solstice
C	Only at the maximum point
D	Only at the minimum point

14. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	Double-hop propagation along the path is more common
B	Propagation via ordinary skywave communications is not possible over that path
C	Propagation over the path on all HF frequencies is enhanced
D	HF communications over the path are enhanced

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

Select	Answer
A	The F2 region
B	The D region
C	The E region
D	The F1 region

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	More stations can be accommodated within a given signal passband
C	Accidental out-of-band operation can be prevented
D	It may be possible to reduce or eliminate interference from other signals

17. - G4B06

What is an advantage of a digital multimeter as compared to an analog multimeter?

Select	Answer
A	Less prone to overload
B	Higher precision
C	Faster response
D	Better for measuring computer circuits

18. - G4C05

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

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

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 below the edge of the segment
C	At least 3 kHz above the edge of the segment
D	At least 1 kHz above the edge of the segment

20. - G4E02

What is the purpose of a corona ball on an HF mobile antenna?

Select	Answer
A	To increase the “Q” of the antenna
B	To reduce RF voltage discharge from the tip of the antenna while transmitting
C	To narrow the operating bandwidth of the antenna
D	To reduce the chance of damage if the antenna should strike an object

21. - G5A03

Which of the following is opposition to the flow of alternating current in an inductor?

Select	Answer
A	Reactance
B	Admittance
C	Conductance
D	Reluctance

22. - G5B08

What is the peak-to-peak voltage of a sine wave with an RMS voltage of 120 volts?

Select	Answer
A	240.0 volts
B	339.4 volts
C	169.7 volts
D	84.8 volts

23. - G5C12

What is the capacitance of a 20-microfarad capacitor connected in series with a 50-microfarad capacitor?

Select	Answer
A	1,000 microfarads
B	14.3 microfarads
C	0.07 microfarads
D	70 microfarads

24. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To reduce grid-to-plate capacitance
B	To increase efficiency
C	To decrease plate resistance
D	To increase the control grid resistance

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Low power consumption
B	Better suited for RF amplification
C	High power handling capability
D	Better suited for power supply regulation

26. - G7A06

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

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

27. - G7B04

In a Class A amplifier, what percentage of the time does the amplifying device conduct?

Select	Answer
A	Less than 50%
B	100%
C	50%
D	More than 50% but less than 100%

28. - G7C08

Which parameter affects receiver sensitivity?

Select	Answer
A	All these choices are correct
B	Input amplifier noise figure
C	Demodulator stage bandwidth
D	Input amplifier gain

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The bandwidth of the modulated signal
B	The waveform created by connecting the peak values of the modulated signal
C	Spurious signals that envelop nearby frequencies
D	The carrier frequency that contains the signal

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It improves impedance matching of the antenna
B	It results in the best signal-to-noise ratio
C	It minimizes power consumption in the receiver
D	It is required by FCC rules

31. - G8C09

Which is true of mesh network microwave nodes?

Select	Answer
A	Links between two nodes in a network may have different frequencies and bandwidths
B	If one node fails, a packet may still reach its target station via an alternate node
C	Having more nodes increases signal strengths
D	More nodes reduce overall microwave out of band interference

32. - G9A10

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

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

33. - G9B05

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

Select	Answer
A	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
B	If the antenna is too high, the pattern becomes unpredictable
C	Antenna height has no effect on the pattern
D	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

Select	Answer
A	It is useful for matching multiband antennas
B	It does not require the driven element to be insulated from the boom
C	It does not require any inductors or capacitors
D	All these choices are correct

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