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. - G0A02

Which of the following is used to determine RF exposure from a transmitted signal?

Select	Answer
A	Its duty cycle
B	Its frequency
C	All these choices are correct
D	Its power density

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	Acceptable modulation limits
D	RF exposure limits of the human body

3. - G1A11

When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is available to them?

Select	Answer
A	The lower frequency portion
B	The upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
C	The upper frequency portion
D	The lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz

4. - G1B06

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

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

5. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

Select	Answer
A	56 kilobaud
B	300 baud
C	1200 baud
D	19.6 kilobaud

6. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	16 years
B	There is no age limit
C	18 years
D	21 years

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands
B	On any band segment where digital operation is permitted
C	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
D	Only in the non-phone Extra Class segments of the bands

8. - G2A04

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

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

9. - G2B10

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

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

10. - G2C07

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

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

11. - G2D11

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

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

12. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	850 Hz
B	85 Hz
C	170 Hz
D	425 Hz

13. - G3A03

Approximately how long does it take the increased ultraviolet and X-ray radiation from a solar flare to affect radio propagation on Earth?

Select	Answer
A	28 days
B	20 to 40 hours
C	1 to 2 hours
D	8 minutes

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	World-wide propagation during daylight hours
B	Poor propagation at any time of day
C	Heavy distortion on signals due to photon absorption
D	High levels of atmospheric noise or static

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Signals have a fluttering sound
B	Scatter propagation occurs only at night
C	Phone signals have high intelligibility
D	There are very large, sudden swings in signal strength

16. - G4A13

What is the purpose of using a receive attenuator?

Select	Answer
A	To reduce excessive audio level on strong signals
B	To reduce power consumption when operating from batteries
C	To reduce the transmitter power when driving a linear amplifier
D	To prevent receiver overload from strong incoming signals

17. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An ohmmeter
B	An oscilloscope
C	A signal generator
D	An ammeter

18. - G4C06

What is a possible effect of a resonant ground connection?

Select	Answer
A	High RF voltages on the enclosures of station equipment
B	Corrosion of the ground rod
C	A ground loop
D	Overheating of ground straps

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	Distorted speech
B	Excess intermodulation products
C	All these choices are correct
D	Excessive background noise

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

Select	Answer
A	Ensure the battery is placed terminals-up
B	A series resistor must be in place
C	The solar panel must have a charge controller
D	Ground the solar panel outer metal framework

21. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the amplitude of the applied AC increases, the reactance decreases
C	As the amplitude of the applied AC increases, the reactance increases
D	As the frequency of the applied AC increases, the reactance decreases

22. - G5B05

How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

Select	Answer
A	Approximately 61 watts
B	Approximately 11 watts
C	Approximately 11 milliwatts
D	Approximately 61 milliwatts

23. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

Select	Answer
A	A capacitor in series
B	A capacitor in parallel
C	An inductor in series
D	An inductor in parallel

24. - G6A06

Why should wire-wound resistors not be used in RF circuits?

Select	Answer
A	The resistor could overheat
B	The resistor’s inductance could make circuit performance unpredictable
C	The resistor’s tolerance value would not be adequate
D	The resistor’s internal capacitance would detune the circuit

25. - G6B10

How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?

Select	Answer
A	By creating an out-of-phase current to cancel the common-mode current
B	It converts common-mode current to differential mode current
C	By creating an impedance in the current’s path
D	Ferrites expel magnetic fields

26. - G7A11

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

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

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

Select	Answer
A	Class A
B	Class C
C	Class B
D	Class AB

28. - G7C13

What term specifies a filter’s maximum ability to reject signals outside its passband?

Select	Answer
A	Notch depth
B	Insertion loss
C	Ultimate rejection
D	Rolloff

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The bandwidth of the modulated signal
B	Spurious signals that envelop nearby frequencies
C	The carrier frequency that contains the signal
D	The waveform created by connecting the peak values of the modulated signal

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	60 kHz
B	101.75 Hz
C	416.7 Hz
D	5 kHz

31. - G8C07

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

Select	Answer
A	MFSK32
B	MSK144
C	FT8
D	AMTOR

32. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 100 feet
B	Ohms per 1,000 feet
C	Decibels per 100 feet
D	Decibels per 1,000 feet

33. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	As high as possible above the ground
B	At the center of the antenna
C	On the surface or buried a few inches below the ground
D	Parallel to the antenna element

34. - G9C01

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

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

35. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

Select	Answer
A	A vertical dipole placed at approximately 1/2 wavelength above the ground
B	A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
C	A horizontal dipole placed at approximately 1/2 wavelength above the ground
D	A vertical antenna placed between 1/4 and 1/2 wavelength above the ground

Figure G7-1