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. - G0A11

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

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

2. - G0B07

Which of these choices should be observed when climbing a tower using a safety harness?

Select	Answer
A	All these choices are correct
B	Confirm that the harness is rated for the weight of the climber and that it is within its allowable service life
C	Always hold on to the tower with one hand
D	Ensure that all heavy tools are securely fastened to the harness

3. - G1A05

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

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

4. - G1B01

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

Select	Answer
A	250 feet
B	100 feet
C	50 feet
D	200 feet

5. - G1C11

What measurement is specified by FCC rules that regulate maximum power?

Select	Answer
A	RMS input to the antenna
B	PEP input to the antenna
C	PEP output from the transmitter
D	RMS output from the transmitter

6. - G1D07

Volunteer Examiners are accredited by what organization?

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

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
B	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
C	They must relate to emergencies or disaster relief
D	They must be for other licensed amateurs

8. - G2A03

Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

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

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

10. - G2C02

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

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

11. - G2D11

Why are signal reports typically exchanged at the beginning of an HF contact?

Select	Answer
A	To be sure the contact will count for award programs
B	To allow each station to operate according to conditions
C	To allow each station to calibrate their frequency display
D	To follow standard radiogram structure

12. - G2E12

Which of the following describes Winlink?

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

13. - G3A12

What does the K-index measure?

Select	Answer
A	The short-term stability of the Sun’s magnetic field
B	The solar radio flux at Boulder, Colorado
C	The short-term stability of Earth’s geomagnetic field
D	The relative position of sunspots on the surface of the Sun

14. - G3B07

What does LUF stand for?

Select	Answer
A	The Lowest Usable Frequency during a 24-hour period
B	Lowest Usable Frequency for communications to any point outside a 100-mile radius
C	The Lowest Usable Frequency for communications between two specific points
D	Lowest Usable Frequency during the past 60 minutes

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A01

What is the purpose of the notch filter found on many HF transceivers?

Select	Answer
A	To eliminate receiver interference from impulse noise sources
B	To remove interfering splatter generated by signals on adjacent frequencies
C	To restrict the transmitter voice bandwidth
D	To reduce interference from carriers in the receiver passband

17. - G4B06

What is an advantage of a digital multimeter as compared to an analog multimeter?

Select	Answer
A	Faster response
B	Better for measuring computer circuits
C	Less prone to overload
D	Higher precision

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

Select	Answer
A	An item of station equipment starts to draw excessive amounts of current
B	You receive reports of harmonic interference from your station
C	You receive reports of “hum” on your station’s transmitted signal
D	The SWR reading for one or more antennas is suddenly very high

19. - G4D02

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

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

20. - G4E03

Which of the following direct, fused power connections would be the best for a 100-watt HF mobile installation?

Select	Answer
A	To the alternator or generator using insulated heavy duty balanced transmission line
B	To the battery using heavy-gauge wire
C	To the battery using insulated heavy duty balanced transmission line
D	To the alternator or generator using heavy-gauge wire

21. - G5A01

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

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

22. - G5B02

How does the total current relate to the individual currents in a circuit of parallel resistors?

Select	Answer
A	It is the sum of the reciprocal of each individual voltage drop
B	It equals the average of the branch currents
C	It decreases as more parallel branches are added to the circuit
D	It equals the sum of the currents through each branch

23. - G5C07

What transformer turns ratio matches an antenna’s 600-ohm feed point impedance to a 50-ohm coaxial cable?

Select	Answer
A	144 to 1
B	12 to 1
C	24 to 1
D	3.5 to 1

24. - G6A08

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

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

25. - G6B05

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	Most of the magnetic field is contained in the core
B	The magnetic properties of the core may be optimized for a specific range of frequencies
C	All these choices are correct
D	Large values of inductance may be obtained

26. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 7
B	Symbol 6
C	Symbol 11
D	Symbol 1

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	A Class C high efficiency amplifier
C	An amplifier used as a frequency multiplier
D	An amplifier in which the output preserves the input waveform

28. - G7C08

Which parameter affects receiver sensitivity?

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

29. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient bandwidth
B	Insufficient audio
C	Excessive bandwidth
D	Frequency drift

30. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Higher symbol rates require wider bandwidth
B	Lower symbol rates require wider bandwidth
C	Symbol rate and bandwidth are not related
D	Bandwidth is half the symbol rate

31. - G8C08

Which of the following statements is true about PSK31?

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

32. - G9A02

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	High SWR reduces the relative effect of transmission line loss
B	There is no relationship between transmission line loss and SWR
C	High SWR makes it difficult to measure transmission line loss
D	High SWR increases loss in a lossy transmission line

33. - G9B07

How does the feed point impedance of a horizontal 1/2 wave dipole antenna change as the antenna height is reduced to 1/10 wavelength above ground?

Select	Answer
A	It steadily increases
B	It is unaffected by the height above ground
C	It steadily decreases
D	It peaks at about 1/8 wavelength above ground

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

Select	Answer
A	All these choices are correct
B	The spacing of each element along the boom
C	The physical length of the boom
D	The number of elements on the boom

35. - G9D10

In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

Select	Answer
A	Broadside and in the plane of the loop
B	Broadside to the loop
C	Electrically small loops are omnidirectional
D	In the plane of the loop

Figure G7-1