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. - G0A11

What precaution should be taken if you install an indoor transmitting antenna?

Select	Answer
A	Make sure the antenna is properly shielded
B	Make sure that MPE limits are not exceeded in occupied areas
C	Position the antenna along the edge of a wall to reduce parasitic radiation
D	Locate the antenna close to your operating position to minimize feed-line radiation

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

3. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	20 meters
B	30 meters
C	160 meters
D	12 meters

4. - G1B06

Under what conditions are state and local governments permitted to regulate amateur radio antenna structures?

Select	Answer
A	At any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC
B	Under no circumstances, FCC rules take priority
C	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure
D	Amateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	50 watts PEP output
B	200 watts PEP output
C	1500 watts PEP output
D	An effective radiated power equivalent to 100 watts from a half-wave dipole

6. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Universal Licensing System
B	The Wireless Telecommunications Bureau
C	A Volunteer Examiner Coordinator
D	The Federal Communications Commission

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Only if the 10-meter repeater control operator holds at least a General class license
B	Under no circumstances
C	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
D	Only during an FCC-declared general state of communications emergency

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	It allows “hands free” operation
B	It provides more power output
C	The received signal is more natural sounding
D	It occupies less bandwidth

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 Hz to 50 Hz
B	150 Hz to 500 Hz
C	3 kHz to 6 kHz
D	1 kHz to 3 kHz

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	I am ready to receive
B	There is interference on the frequency
C	I am quitting for the day
D	You are sending too fast

11. - G2D07

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

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

12. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	You may be listening on the wrong sideband
B	All these choices are correct
C	The mark and space frequencies may be reversed
D	You may have selected the wrong baud rate

13. - G3A05

What is the solar flux index?

Select	Answer
A	A count of sunspots that is adjusted for solar emissions
B	A measure of solar radiation with a wavelength of 10.7 centimeters
C	Another name for the American sunspot number
D	A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just below the critical frequency
B	Just below the MUF
C	Just above the LUF
D	Just above the critical frequency

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

Select	Answer
A	Long path HF propagation at sunrise and sunset
B	Propagation near the MUF
C	Double hop propagation near the LUF
D	Short distance MF or HF propagation at high elevation angles

16. - G4A13

What is the purpose of using a receive attenuator?

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

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

Select	Answer
A	All these choices are correct
B	Received power that interferes with SWR readings
C	Desensitization which can cause intermodulation products which interfere with impedance readings
D	Generation of harmonics which interfere with frequency readings

18. - G4C04

What sound is heard from an audio device experiencing RF interference from a CW transmitter?

Select	Answer
A	A chirpy CW signal
B	Severely distorted audio
C	A CW signal at a nearly pure audio frequency
D	On-and-off humming or clicking

19. - G4D11

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

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

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	To prevent discharge of the battery through the panel during times of low or no illumination
B	To prevent damage to the battery due to excessive voltage at high illumination levels
C	To prevent overload by regulating the charging voltage
D	To limit the current flowing from the panel to a safe value

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Impedance is equal to the geometric mean of the inductance and capacitance
B	Resonance causes impedance to be very high
C	Impedance is equal to the arithmetic mean of the inductance and capacitance
D	Resonance causes impedance to be very low

22. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The peak value
B	The reciprocal of the RMS value
C	The RMS value
D	The peak-to-peak value

23. - G5C08

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

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

24. - G6A08

Which of the following is characteristic of low voltage ceramic capacitors?

Select	Answer
A	Comparatively low cost
B	Tight tolerance
C	High capacitance for given volume
D	High stability

25. - G6B01

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

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

26. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Capacitors and inductors
B	Transformers and transducers
C	All these choices are correct
D	Diodes

27. - G7B06

What is a shift register?

Select	Answer
A	An analog mixer
B	A clocked array of circuits that passes data in steps along the array
C	An array of operational amplifiers used for tri-state arithmetic operations
D	A digital mixer

28. - G7C11

Which of these functions is performed by software in a software-defined radio (SDR)?

Select	Answer
A	All these choices are correct
B	Modulation
C	Detection
D	Filtering

29. - G8A04

What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

Select	Answer
A	Amplitude modulation
B	Multiplex modulation
C	Pulse modulation
D	Phase modulation

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

Select	Answer
A	Image response
B	Intermediate interference
C	Quadrature response
D	Mixer interference

31. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Upper case letters are sent with more power
B	Higher power is needed as compared to RTTY for similar error rates
C	Upper case letters use longer Varicode bit sequences and thus slow down transmission
D	Error correction is used to ensure accurate message reception

32. - G9A10

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

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

33. - G9B06

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

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

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Resonant frequency is lower
B	Beamwidth increases
C	Front-to-back ratio decreases
D	Gain increases

35. - G9D12

What is the common name of a dipole with a single central support?

Select	Answer
A	Inverted V
B	Lazy H
C	Sloper
D	Inverted L