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

2. - G0B05

Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

Select	Answer
A	Current flowing from one or more of the hot wires to the neutral wire
B	Current flowing from one or more of the hot wires directly to ground
C	Overvoltage on the hot wires
D	All these choices are correct

3. - G1A05

On which of the following frequencies are General class licensees prohibited from operating as control operator?

Select	Answer
A	All these choices are correct
B	21.275 MHz to 21.300 MHz
C	28.000 MHz to 28.025 MHz
D	7.125 MHz to 7.175 MHz

4. - G1B06

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

Select	Answer
A	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
B	Under no circumstances, FCC rules take priority
C	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
D	Only when such structures exceed 50 feet in height and are clearly visible 1,000 feet from the structure

5. - G1C03

What is the maximum bandwidth permitted by FCC rules for amateur radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	1.8 kHz
B	5.6 kHz
C	3 kHz
D	2.8 kHz

6. - G1D01

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

Select	Answer
A	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
B	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
C	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
D	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

7. - G1E07

In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

Select	Answer
A	Channels 42 through 45
B	Anywhere in the band
C	Channels 1 through 4
D	No part

8. - G2A09

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

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

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

10. - G2C09

What does the Q signal “QSL” mean?

Select	Answer
A	We have already confirmed the contact
B	I have received and understood
C	We have worked before
D	Send slower

11. - G2D06

How is a directional antenna pointed when making a “long-path” contact with another station?

Select	Answer
A	Toward the rising sun
B	180 degrees from the station’s short-path heading
C	Toward the north
D	Along the gray line

12. - G2E13

What is another name for a Winlink Remote Message Server?

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

13. - G3A11

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

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

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Solar radiation and ionospheric disturbances
B	All these choices are correct
C	Path distance and location
D	Time of day and season

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The ionospheric region involved is unstable
B	The E region is not present
C	Energy is scattered into the skip zone through several different paths
D	Ground waves are absorbing much of the signal

16. - G4A05

Why is automatic level control (ALC) used with an RF power amplifier?

Select	Answer
A	To reduce harmonic radiation
B	To prevent excessive drive
C	To increase overall efficiency
D	To balance the transmitter audio frequency response

17. - G4B07

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

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

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

19. - G4D01

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

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

20. - G4E05

Which of the following most limits an HF mobile installation?

Select	Answer
A	The wire gauge of the DC power line to the transceiver
B	“Picket fencing”
C	FCC rules limiting mobile output power on the 75-meter band
D	Efficiency of the electrically short antenna

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Resistance is cancelled
B	Current and voltage are equal
C	The circuit radiates all its energy in the form of radio waves
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 reciprocal of the RMS value
B	The RMS value
C	The peak value
D	The peak-to-peak value

23. - G5C02

What is the output voltage if an input signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?

Select	Answer
A	Additional resistance must be added in parallel with the secondary to prevent overload
B	The input voltage is divided by 4
C	Additional resistance must be added in series with the primary to prevent overload
D	The input voltage is multiplied by 4

24. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12-volt lead-acid battery?

Select	Answer
A	10.5 volts
B	8.5 volts
C	12 volts
D	6 volts

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	40 GHz
B	4 GHz
C	500 MHz
D	50 MHz

26. - G7A02

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

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

27. - G7B03

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

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

28. - G7C08

Which parameter affects receiver sensitivity?

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

29. - G8A10

What is meant by the term “flat-topping,” when referring to an amplitude-modulated phone signal?

Select	Answer
A	Signal distortion caused by insufficient collector current
B	Signal distortion caused by excessive drive or speech levels
C	The transmitter’s carrier is properly suppressed
D	The transmitter’s automatic level control (ALC) is properly adjusted

30. - G8B01

Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?

Select	Answer
A	RF input
B	Image frequency
C	Local oscillator
D	Beat frequency oscillator

31. - G8C05

In an ARQ mode, what is meant by a NAK response to a transmitted packet?

Select	Answer
A	Receiving station connected and ready for transmissions
B	Packet was received without error
C	Entire file received correctly
D	Request retransmission of the packet

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Higher loss increases SWR measured at the input to the line
B	Higher loss increases the accuracy of SWR measured at the input to the line
C	Transmission line loss does not affect the SWR measurement
D	Higher loss reduces SWR measured at the input to the line

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	21 feet
B	16 feet
C	8 feet
D	11 feet

34. - G9C04

How does antenna gain in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	Gain in dBi is 2.15 dB higher
B	Gain in dBd is 1.25 dBd lower
C	Gain in dBd is 1.25 dBd higher
D	Gain in dBi is 2.15 dB lower

35. - G9D08

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

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