US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2023-2027) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G0A08

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

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

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	All these choices are correct
C	Overvoltage on the hot wires
D	Current flowing from one or more of the hot wires directly to ground

3. - G1A04

Which of the following amateur bands is restricted to communication only on specific channels, rather than frequency ranges?

Select	Answer
A	11 meters
B	60 meters
C	12 meters
D	30 meters

4. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	The frequency must be posted on the internet or published in a national periodical
B	All these choices are correct
C	The frequency must be coordinated with the National Beacon Organization
D	No more than one beacon station may transmit in the same band from the same station location

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Obtain an experimental license from the FCC
B	Publicly document the technical characteristics of the protocol
C	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
D	Type-certify equipment to FCC standards

6. - G1D04

Who must observe the administration of a Technician class license examination?

Select	Answer
A	At least three Volunteer Examiners of General class or higher
B	At least two Volunteer Examiners of Technician class or higher
C	At least three Volunteer Examiners of Technician class
D	At least two Volunteer Examiners of General class or higher

7. - G1E01

Which of the following would disqualify a third party from participating in sending a message via an amateur station?

Select	Answer
A	The third party is not a US citizen
B	All these choices are correct
C	The third party is speaking in a language other than English
D	The third party’s amateur license has been revoked and not reinstated

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

Select	Answer
A	Suppressed sideband
B	Double sideband
C	Upper sideband
D	Lower sideband

9. - G2B10

Which of the following is good amateur practice for net management?

Select	Answer
A	All these choices are correct
B	Always use multiple sets of phonetics during check-in
C	Have a backup frequency in case of interference or poor conditions
D	Transmit the full net roster at the beginning of every session

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 10 wpm
B	The fastest speed at which you are comfortable copying, but no slower than the CQ
C	The fastest speed at which you are comfortable copying, but no faster than the CQ
D	At the standard calling speed of 5 wpm

11. - G2D02

Which of the following are objectives of the Volunteer Monitor Program?

Select	Answer
A	To provide emergency and public safety communications
B	To coordinate repeaters for efficient and orderly spectrum usage
C	To encourage amateur radio operators to self-regulate and comply with the rules
D	To conduct efficient and orderly amateur licensing examinations

12. - G2E13

What is another name for a Winlink Remote Message Server?

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

13. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A sudden drop in the solar flux index
B	A thunderstorm that affects radio propagation
C	A temporary disturbance in Earth’s geomagnetic field
D	Ripples in the geomagnetic force

14. - G3B03

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

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

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

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. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When measuring the frequency of an oscillator
B	When testing logic circuits
C	When adjusting circuits for maximum or minimum values
D	When high precision is desired

18. - G4C04

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

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

19. - G4D02

How does a speech processor affect a single sideband phone signal?

Select	Answer
A	It increases average power
B	It increases peak power
C	It reduces intermodulation distortion
D	It reduces harmonic distortion

20. - G4E02

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

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

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A transformer
B	All these choices are correct
C	A Pi-network
D	A length of transmission line

22. - G5B01

What dB change represents a factor of two increase or decrease in power?

Select	Answer
A	Approximately 2 dB
B	Approximately 9 dB
C	Approximately 3 dB
D	Approximately 6 dB

23. - G5C03

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

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

24. - G6A02

What is an advantage of batteries with low internal resistance?

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

25. - G6B07

Which of the following describes a type N connector?

Select	Answer
A	A low noise figure VHF connector
B	A nickel plated version of the PL-259
C	A moisture-resistant RF connector useful to 10 GHz
D	A small bayonet connector used for data circuits

26. - G7A12

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

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

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	Any RF power amplifier used in conjunction with an amateur transceiver
B	An amplifier used as a frequency multiplier
C	An amplifier in which the output preserves the input waveform
D	A Class C high efficiency amplifier

28. - G7C10

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

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

29. - G8A04

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

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

30. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To aid in tuning your transmitter
B	To allow time for the other station to break in during a transmission
C	To prevent overmodulation
D	Some modes have high duty cycles that could exceed the transmitter’s average power rating

31. - G8C07

Which of the following narrow-band digital modes can receive signals with very low signal-to-noise ratios?

Select	Answer
A	MSK144
B	FT8
C	MFSK32
D	AMTOR

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	Between 1:1 and 5:1 depending on the reflected power at the transmitter
B	1:1
C	Between 1:1 and 5:1 depending on the characteristic impedance of the line
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	Antenna height has no effect on the pattern
B	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
C	If the antenna is too high, the pattern becomes unpredictable
D	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated

34. - G9C11

What is a beta or hairpin match?

Select	Answer
A	A shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching
B	A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna
C	A series capacitor selected to cancel the inductive reactance of a folded dipole antenna
D	A 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching

35. - G9D02

What is the feed point impedance of an end-fed half-wave antenna?

Select	Answer
A	Very low
B	Approximately 300 ohms
C	Very high
D	Approximately 50 ohms

Figure G7-1