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. - G0A05

What must you do if an evaluation of your station shows that the RF energy radiated by your station exceeds permissible limits for possible human absorption?

Select	Answer
A	Secure written permission from your neighbors to operate above the controlled MPE limits
B	File an Environmental Impact Statement (EIS-97) with the FCC
C	All these choices are correct
D	Take action to prevent human exposure to the excessive RF fields

2. - G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

Select	Answer
A	Only the hot wires
B	Only the neutral wire
C	All wires
D	Only the ground wire

3. - G1A08

Which HF bands have segments exclusively allocated to Amateur Extra licensees?

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

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	Transmissions to assist with learning the International Morse code
B	Unidentified test transmissions of less than 10 seconds in duration
C	Regular transmissions offering equipment for sale, if intended for amateur radio use
D	All these choices are correct

5. - G1C11

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

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

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	On any General or Technician class band segment
B	Only the Technician band segments until your upgrade is posted in the FCC database
C	Only on the Technician band segments until you have a receipt for the FCC application fee payment
D	On any General or Technician class band segment except 30 meters and 60 meters

7. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The interrogating transmission must be made by another automatically controlled station
B	The station initiating the contact must be under local or remote control
C	No third-party traffic may be transmitted
D	The control operator of the interrogating station must hold an Amateur Extra class license

8. - G2A02

Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?

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

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	Except during emergencies, no amateur station has priority access to any frequency
B	Contest operations should yield to non-contest use of frequencies
C	Nets have priority
D	QSOs in progress have priority

10. - G2C07

When sending CW, what does a “C” mean when added to the RST report?

Select	Answer
A	Report was read from an S meter rather than estimated
B	Chirpy or unstable signal
C	100 percent copy
D	Key clicks

11. - G2D08

Why do many amateurs keep a station log?

Select	Answer
A	The FCC requires a log of all international third-party traffic
B	The log provides evidence of operation needed to renew a license without retest
C	To help with a reply if the FCC requests information about your station
D	The FCC requires a log of all international contacts

12. - G2E13

What is another name for a Winlink Remote Message Server?

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

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	At the summer solstice
B	Only at the maximum point
C	At any point
D	Only at the minimum point

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

15. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Propagation is via ground waves, which absorb most of the signal energy
B	Only a small part of the signal energy is scattered into the skip zone
C	Propagation is via ducts in the F region, which absorb most of the energy
D	Signals are scattered from the magnetosphere, which is not a good reflector

16. - G4A09

What is the purpose of delaying RF output after activating a transmitter’s keying line to an external amplifier?

Select	Answer
A	To prevent transient overmodulation
B	To prevent key clicks on CW
C	To allow time for the amplifier power supply to reach operating level
D	To allow time for the amplifier to switch the antenna between the transceiver and the amplifier output

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

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

18. - G4C03

What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

Select	Answer
A	Distorted speech
B	On-and-off humming or clicking
C	Clearly audible speech
D	A steady hum whenever the transmitter is on the air

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 100 times more powerful
B	It is 20 times more powerful
C	It is 10 times less powerful
D	It is 20 times less powerful

20. - G4E05

Which of the following most limits an HF mobile installation?

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

21. - G5A04

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

Select	Answer
A	Reluctance
B	Conductance
C	Admittance
D	Reactance

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 value
D	The peak-to-peak value

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	3.5 to 1
C	12 to 1
D	24 to 1

24. - G6A08

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

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

25. - G6B05

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

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

26. - G7A02

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

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

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Add the RF input power to the DC output power
B	Multiply the RF input power by the reciprocal of the RF output power
C	Divide the DC input power by the DC output power
D	Divide the RF output power by the DC input power

28. - G7C11

Which of these functions is performed by software in a software-defined radio (SDR)?

Select	Answer
A	Filtering
B	Modulation
C	All these choices are correct
D	Detection

29. - G8A04

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

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

30. - G8B08

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

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

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By transmitting redundant information with the data
B	By using the Varicode character set
C	By controlling transmitter output power for optimum signal strength
D	By using a parity bit with each character

32. - G9A05

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

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

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

Select	Answer
A	Omnidirectional in azimuth
B	Isotropic
C	Bi-directional in azimuth
D	Hemispherical

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The direction of maximum radiated field strength from the antenna
B	The magnitude of the maximum vertical angle of radiation
C	The point of maximum current in a radiating antenna element
D	The maximum voltage standing wave point on a radiating element

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