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. - G0A01

What is one way that RF energy can affect human body tissue?

Select	Answer
A	It causes radiation poisoning
B	It heats body tissue
C	It causes the blood count to reach a dangerously low level
D	It cools body tissue

2. - G0B06

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Acceptable bandwidth limits
B	Electrical safety of the station
C	RF exposure limits of the human body
D	Acceptable modulation limits

3. - G1A01

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

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

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Encrypted messages, if not intended to facilitate a criminal act
B	Automatic retransmission of other amateur signals by any amateur station
C	Occasional retransmission of weather and propagation forecast information from US government stations
D	Unidentified transmissions of less than 10 seconds duration for test purposes only

5. - G1C02

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

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

6. - G1D09

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

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

7. - G1E12

When may third-party messages be transmitted via remote control?

Select	Answer
A	Under any circumstances in which third party messages are permitted by FCC rules
B	Only when the message is intended for licensed radio amateurs
C	Under no circumstances except for emergencies
D	Only when the message is intended for third parties in areas where licensing is controlled by the FCC

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

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

10. - G2C06

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

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

11. - G2D04

Which of the following describes an azimuthal projection map?

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

12. - G2E02

What is VARA?

Select	Answer
A	A DX spotting system using a network of software defined radios
B	A radio direction finding system used on VHF and UHF
C	A digital protocol used with Winlink
D	A low signal-to-noise digital mode used for EME (moonbounce)

13. - G3A14

How is long distance radio communication usually affected by the charged particles that reach Earth from solar coronal holes?

Select	Answer
A	HF communication is disturbed
B	VHF/UHF ducting is disturbed
C	HF communication is improved
D	VHF/UHF ducting is improved

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

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

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

16. - G4A03

How does a noise blanker work?

Select	Answer
A	By clipping noise peaks
B	By temporarily increasing received bandwidth
C	By redirecting noise pulses into a filter capacitor
D	By reducing receiver gain during a noise pulse

17. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two non-harmonically related audio signals
B	Two audio frequency range square wave signals of equal amplitude
C	Two audio signals of the same frequency shifted 90 degrees
D	Two swept frequency tones

18. - G4C07

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

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

19. - G4D01

What is the purpose of a speech processor in a transceiver?

Select	Answer
A	Increase the apparent loudness of transmitted voice signals
B	Decrease high-frequency voice output to prevent out-of-band operation
C	Increase transmitter bass response for more natural-sounding SSB signals
D	Prevent distortion of voice signals

20. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?

Select	Answer
A	Operating bandwidth may be very limited
B	Q of the antenna will be very low
C	Harmonic radiation may increase
D	Short antennas are more likely to cause distortion of transmitted signals

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	The circuit radiates all its energy in the form of radio waves
B	Current and voltage are equal
C	Resistance is cancelled
D	Inductive reactance and capacitive reactance cancel

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

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	0.17 ohms
C	17 ohms
D	80 ohms

24. - G6A02

What is an advantage of batteries with low internal resistance?

Select	Answer
A	High voltage
B	High discharge current
C	Rapid recharge
D	Long life

25. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	Forward biased
B	Reverse biased
C	At the Zener voltage
D	In the tunnel-effect region

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 11
B	Symbol 1
C	Symbol 2
D	Symbol 7

27. - G7B03

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

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

28. - G7C08

Which parameter affects receiver sensitivity?

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

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 modulation
B	Phase inversion
C	Phase transformation
D	Phase convolution

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	8 kHz
B	16 kHz
C	5 kHz
D	3 kHz

31. - G8C01

On what band do amateurs share channels with the unlicensed Wi-Fi service?

Select	Answer
A	10.7 GHz
B	432 MHz
C	2.4 GHz
D	902 MHz

32. - G9A09

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

Select	Answer
A	1:2
B	2:1
C	4:1
D	1:4

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

34. - G9C01

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

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

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By extending and retracting the whip
B	By varying its body capacitance
C	By varying the base loading inductance
D	By deploying a capacitance hat

Figure G7-1