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. - G0A11

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

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

2. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	25 amperes
B	15 amperes
C	30 amperes
D	20 amperes

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

4. - G1B06

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

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

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

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

6. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	For as long as your current license is valid
B	180 days
C	30 days
D	365 days

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

8. - G2A03

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

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

9. - G2B05

When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	2 kHz to 3 kHz
B	150 Hz to 500 Hz
C	5 Hz to 50 Hz
D	Approximately 6 kHz

10. - G2C09

What does the Q signal “QSL” mean?

Select	Answer
A	Send slower
B	We have already confirmed the contact
C	I have received and understood
D	We have worked before

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	America, Boston, Canada, Denmark
B	Alpha, Bravo, Charlie, Delta
C	Adam, Boy, Charles, David
D	Able, Baker, Charlie, Dog

12. - G2E05

What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?

Select	Answer
A	SSB
B	USB
C	LSB
D	DSB

13. - G3A13

What does the A-index measure?

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

14. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency during a 24-hour period
B	The Minimum Usable Frequency for communications between two points
C	The Minimum Usable Frequency during a 24-hour period
D	The Maximum Usable Frequency for communications between two points

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

Select	Answer
A	Double hop propagation near the LUF
B	Short distance MF or HF propagation at high elevation angles
C	Propagation near the MUF
D	Long path HF propagation at sunrise and sunset

16. - G4A10

What is the function of an electronic keyer?

Select	Answer
A	Computer interface for PSK and RTTY operation
B	To allow time for switching the antenna from the receiver to the transmitter
C	Automatic transmit/receive switching
D	Automatic generation of dots and dashes for CW operation

17. - G4B06

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

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

18. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Bond equipment enclosures together
B	Connect the AC neutral conductor to the ground wire
C	Avoid using lock washers and star washers when making ground connections
D	Connect all ground conductors in series

19. - G4D02

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

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

20. - G4E04

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle’s auxiliary power socket?

Select	Answer
A	Drawing more than 50 watts from this socket could cause the engine to overheat
B	The socket is not wired with an RF-shielded power cable
C	The socket’s wiring may be inadequate for the current drawn by the transceiver
D	The DC polarity of the socket is reversed from the polarity of modern HF transceivers

21. - G5A04

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

Select	Answer
A	Conductance
B	Reactance
C	Admittance
D	Reluctance

22. - G5B11

What is the ratio of PEP to average power for an unmodulated carrier?

Select	Answer
A	2.00
B	1.414
C	1.00
D	0.707

23. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

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

24. - G6A10

Which element of a vacuum tube regulates the flow of electrons between cathode and plate?

Select	Answer
A	Screen grid
B	Control grid
C	Suppressor grid
D	Trigger electrode

25. - G6B07

Which of the following describes a type N connector?

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

26. - G7A04

What is characteristic of a half-wave rectifier in a power supply?

Select	Answer
A	The output voltage is two times the peak input voltage
B	More current can be drawn from the half-wave rectifier
C	Only one diode is required
D	The ripple frequency is twice that of a full-wave rectifier

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. - G7C14

The bandwidth of a band-pass filter is measured between what two frequencies?

Select	Answer
A	Image and harmonic
B	Cutoff and rolloff
C	Pole and zero
D	Upper and lower half-power

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 convolution
B	Phase modulation
C	Phase inversion
D	Phase transformation

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

Select	Answer
A	Image response
B	Quadrature response
C	Mixer interference
D	Intermediate interference

31. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using an ARQ mode?

Select	Answer
A	The checksum overflows
B	Packets will be routed incorrectly
C	The connection is dropped
D	Encoding reverts to the default character set

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Higher loss increases SWR measured at the input to the line
B	Transmission line loss does not affect the SWR measurement
C	Higher loss increases the accuracy of SWR measured at the input to the line
D	Higher loss reduces SWR measured at the input to the line

33. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It steadily increases
B	It peaks at about 1/8 wavelength from the end
C	It steadily decreases
D	It is unaffected by the location of the feed point

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. - G9D02

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

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