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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By calculation based on computer modeling
B	By calculation based on FCC OET Bulletin 65
C	All these choices are correct
D	By measurement of field strength using calibrated equipment

2. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	RF energy can convert the lead into a poisonous gas
B	Lead can contaminate food if hands are not washed carefully after handling the solder
C	Tin in the solder can “cold flow,” causing shorts in the circuit
D	High voltages can cause lead-tin solder to disintegrate suddenly

3. - G1A09

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

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

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The control operator
B	The ITU
C	The IEEE
D	The FCC

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	10 watts RMS
B	1500 watts PEP
C	ERP of 100 watts PEP with respect to an isotropic antenna
D	ERP of 100 watts PEP with respect to a dipole

6. - G1D02

What license examinations may you administer as an accredited Volunteer Examiner holding a General class operator license?

Select	Answer
A	None, only Amateur Extra class licensees may be accredited
B	Technician only
C	Amateur Extra, General, and Technician
D	General and Technician

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 4
C	Region 1
D	Region 2

8. - G2A09

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

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

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

Select	Answer
A	Switch to the opposite sideband
B	Attempt to resolve the interference problem with the other stations in a mutually acceptable manner
C	Advise the interfering stations that you are on the frequency and that you have priority
D	Decrease power and continue to transmit

10. - G2C02

What should you do if a CW station sends “QRS?”

Select	Answer
A	Send slower
B	Increase your power
C	Change frequency
D	Repeat everything twice

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
B	A map that shows the angle at which an amateur satellite crosses the equator
C	A map that shows true bearings and distances from a specific location
D	A map that shows accurate land masses

12. - G2E12

Which of the following describes Winlink?

Select	Answer
A	A form of Packet Radio
B	A wireless network capable of both VHF and HF band operation
C	All of the above
D	An amateur radio wireless network to send and receive email on the internet

13. - G3A11

How long does it take a coronal mass ejection to affect radio propagation on Earth?

Select	Answer
A	14 days
B	15 hours to several days
C	28 days
D	4 to 8 minutes

14. - G3B05

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

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

15. - G3C02

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

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

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 the transmitter power when driving a linear amplifier
C	To reduce power consumption when operating from batteries
D	To prevent receiver overload from strong incoming signals

17. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	All these choices are correct
B	Transmitter
C	Receiver
D	Antenna and feed line

18. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

Select	Answer
A	Bypass inductor
B	Reverse-biased diode
C	Bypass capacitor
D	Forward-biased diode

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	7.178 MHz to 7.184 MHz
B	7.178 MHz to 7.181 MHz
C	7.175 MHz to 7.178 MHz
D	7.1765 MHz to 7.1795 MHz

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.2 VDC
B	1.38 VDC
C	0.02 VDC
D	0.5 VDC

21. - G5A04

Which of the following is opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Conductance
B	Admittance
C	Reactance
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	84.8 volts
B	240.0 volts
C	339.4 volts
D	169.7 volts

23. - G5C03

What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

Select	Answer
A	5.9 ohms
B	80 ohms
C	17 ohms
D	0.17 ohms

24. - G6A05

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

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

25. - G6B03

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

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

26. - G7A12

Which symbol in Figure G7-1 represents a solid core transformer?

Select	Answer
A	Symbol 4
B	Symbol 1
C	Symbol 7
D	Symbol 6

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The time delay of the lag circuit
B	The number of stages in the divider
C	The inductance and capacitance in the tank circuit
D	The number of stages in the counter

28. - G7C10

What is an advantage of using I-Q modulation with software-defined radios (SDRs)?

Select	Answer
A	Automatic conversion of the signal from digital to analog
B	Minimum detectible signal level is reduced
C	All types of modulation can be created with appropriate processing
D	The need for high resolution analog-to-digital converters is eliminated

29. - G8A13

What is a link budget?

Select	Answer
A	The difference between transmit power and receiver sensitivity
B	The financial costs associated with operating a radio link
C	The sum of antenna gains minus system losses
D	The sum of transmit power and antenna gains minus system losses as seen at the receiver

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

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

31. - G8C14

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is horizontal, signal strength is vertical, time is intensity
B	Frequency is horizontal, signal strength is intensity, time is vertical
C	Frequency is vertical, signal strength is horizontal, time is intensity
D	Frequency is vertical, signal strength is intensity, time is horizontal

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation decreases
B	Attenuation follows Marconi’s Law of Attenuation
C	Attenuation increases
D	Attenuation is independent of frequency

33. - G9B09

Which of the following is an advantage of using a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower radiation resistance
B	Lower feed point impedance
C	Lower ground losses
D	Shorter radials

34. - G9C05

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

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

35. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

Select	Answer
A	A vertical antenna placed between 1/4 and 1/2 wavelength above the ground
B	A horizontal dipole placed at approximately 1/2 wavelength above the ground
C	A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
D	A vertical dipole placed at approximately 1/2 wavelength above the ground

Figure G7-1