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

2. - G0B02

According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?

Select	Answer
A	AWG number 20
B	AWG number 12
C	AWG number 8
D	AWG number 16

3. - G1A07

On which amateur frequencies in the 10-meter band may stations with a General class control operator transmit CW emissions?

Select	Answer
A	28.000 MHz to 28.025 MHz only
B	28.025 MHz to 28.300 MHz only
C	The entire band
D	28.000 MHz to 28.300 MHz only

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The FCC
B	The IEEE
C	The ITU
D	The control operator

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. - G1D08

Which of the following criteria must be met for a non-US citizen to be an accredited Volunteer Examiner?

Select	Answer
A	The person must hold an FCC granted amateur radio license of General class or above
B	The person must be a resident of the US for a minimum of 5 years
C	None of these choices is correct; a non-US citizen cannot be a Volunteer Examiner
D	The person’s home citizenship must be in ITU region 2

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	Only in the non-phone Extra Class segments of the bands
C	On any band segment where digital operation is permitted
D	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands

8. - G2A01

Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

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. - 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	Key clicks
D	Report was read from an S meter rather than estimated

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
C	A map that shows the angle at which an amateur satellite crosses the equator
D	A map that shows true bearings and distances from a specific location

12. - G2E03

What symptoms may result from other signals interfering with a PACTOR or VARA transmission?

Select	Answer
A	All these choices are correct
B	Long pauses in message transmission
C	Failure to establish a connection between stations
D	Frequent retries or timeouts

13. - G3A10

What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

Select	Answer
A	Long term oscillations in the upper atmosphere
B	Cyclic variation in Earth’s radiation belts
C	Rotation of the Sun’s surface layers around its axis
D	The position of the Moon in its orbit

14. - G3B01

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

Select	Answer
A	Signal strength increased by 3 dB
B	The signal might be cancelled causing severe attenuation
C	A slightly delayed echo might be heard
D	Periodic fading approximately every 10 seconds

15. - G3C07

What makes HF scatter signals often sound distorted?

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

16. - G4A07

What happens as a receiver’s noise reduction control level is increased?

Select	Answer
A	CW signals may become severely attenuated
B	Received frequency may shift several kHz
C	Received signals may become distorted
D	Received frequency may become unstable

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 high precision is desired
D	When adjusting circuits for maximum or minimum values

18. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

Select	Answer
A	Bypass inductor
B	Reverse-biased diode
C	Forward-biased diode
D	Bypass capacitor

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

20. - G4E11

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

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

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Current and voltage are equal
B	Resistance is cancelled
C	The circuit radiates all its energy in the form of radio waves
D	Inductive reactance and capacitive reactance cancel

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

Select	Answer
A	3200 watts
B	200 watts
C	400 watts
D	0.5 watts

23. - G5C08

What is the equivalent capacitance of two 5.0-nanofarad capacitors and one 750-picofarad capacitor connected in parallel?

Select	Answer
A	10.750 nanofarads
B	576.9 nanofarads
C	3,583 picofarads
D	1,733 picofarads

24. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

Select	Answer
A	0.1 volt
B	0.3 volts
C	1.0 volts
D	0.7 volts

25. - G6B10

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

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

26. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 5
B	Symbol 4
C	Symbol 2
D	Symbol 1

27. - G7B07

Which of the following are basic components of a sine wave oscillator?

Select	Answer
A	A frequency multiplier and a mixer
B	An amplifier and a divider
C	A filter and an amplifier operating in a feedback loop
D	A circulator and a filter operating in a feed-forward loop

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. - G8A02

What is the name of the process that changes the phase angle of an RF signal to convey information?

Select	Answer
A	Phase transformation
B	Phase convolution
C	Phase modulation
D	Phase inversion

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	101.75 Hz
B	416.7 Hz
C	60 kHz
D	5 kHz

31. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A code using SELCAL and LISTEN
B	A 7-bit code with start, stop, and parity bits
C	A code using error detection and correction
D	A 5-bit code with additional start and stop bits

32. - G9A10

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

Select	Answer
A	1:2
B	5:1
C	2:1
D	1:5

33. - G9B03

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

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

34. - G9C03

How do the lengths of a three-element Yagi reflector and director compare to that of the driven element?

Select	Answer
A	Relative length depends on the frequency of operation
B	The reflector is shorter, and the director is longer
C	They are all the same length
D	The reflector is longer, and the director is shorter

35. - G9D05

What is an advantage of vertically stacking horizontally polarized Yagi antennas?

Select	Answer
A	It narrows the main lobe in elevation
B	It allows simultaneous vertical and horizontal polarization
C	It narrows the main lobe in azimuth
D	It allows quick selection of vertical or horizontal polarization

Figure G7-1