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

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 12
B	AWG number 16
C	AWG number 8
D	AWG number 20

3. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	160 meters
B	12 meters
C	30 meters
D	20 meters

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 control operator
B	The ITU
C	The IEEE
D	The FCC

5. - G1C10

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

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

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

7. - G1E08

What is the maximum PEP output allowed for spread spectrum transmissions?

Select	Answer
A	100 watts
B	10 watts
C	100 milliwatts
D	1500 watts

8. - G2A11

Generally, who should respond to a station in the contiguous 48 states calling “CQ DX”?

Select	Answer
A	Only stations in Germany
B	Any caller is welcome to respond
C	Any stations outside the lower 48 states
D	Only contest stations

9. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	Listen on the frequency for at least two minutes to be sure it is clear
B	All these choices are correct
C	Follow the voluntary band plan
D	Identify your station by transmitting your call sign at least 3 times

10. - G2C09

What does the Q signal “QSL” mean?

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

11. - G2D10

What is QRP operation?

Select	Answer
A	Traffic relay procedure net operation
B	Remote piloted model control
C	Low-power transmit operation
D	Transmission using Quick Response Protocol

12. - G2E13

What is another name for a Winlink Remote Message Server?

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

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 minimum point
C	At any point
D	Only at the maximum point

14. - G3B08

What does MUF stand for?

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

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A13

What is the purpose of using a receive attenuator?

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

17. - G4B13

Which of the following can be measured with an antenna analyzer?

Select	Answer
A	Impedance of coaxial cable
B	Power output from a transmitter
C	Front-to-back ratio of an antenna
D	Gain of a directional antenna

18. - G4C07

Why should soldered joints not be used in lightning protection ground connections?

Select	Answer
A	All these choices are correct
B	Solder flux will prevent a low conductivity connection
C	A soldered joint will likely be destroyed by the heat of a lightning strike
D	Solder has too high a dielectric constant to provide adequate lightning protection

19. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.344 MHz to 14.347 MHz
B	14.347 MHz to 14.647 MHz
C	14.347 MHz to 14.350 MHz
D	14.3455 MHz to 14.3485 MHz

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	Ground the solar panel outer metal framework
C	The solar panel must have a charge controller
D	Ensure the battery is placed terminals-up

21. - G5A08

What is impedance?

Select	Answer
A	The ratio of voltage to current
B	The product of current and voltage
C	The product of current and reactance
D	The ratio of current to voltage

22. - G5B11

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

Select	Answer
A	1.00
B	0.707
C	1.414
D	2.00

23. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Displacement current coupling
B	Mutual capacitance
C	Capacitive coupling
D	Mutual inductance

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

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

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Better suited for power supply regulation
B	Low power consumption
C	High power handling capability
D	Better suited for RF amplification

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Full-wave
B	Synchronous
C	Half-wave
D	Full-wave bridge

27. - G7B02

Which of these classes of amplifiers has the highest efficiency?

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

28. - G7C05

Which of the following is characteristic of a direct digital synthesizer (DDS)?

Select	Answer
A	Relatively high-power output
B	Extremely narrow tuning range
C	Pure sine wave output
D	Variable output frequency with the stability of a crystal oscillator

29. - G8A06

Which of the following is characteristic of QPSK31?

Select	Answer
A	It is sideband sensitive
B	All these choices are correct
C	Its bandwidth is approximately the same as BPSK31
D	Its encoding provides error correction

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It minimizes power consumption in the receiver
B	It is required by FCC rules
C	It results in the best signal-to-noise ratio
D	It improves impedance matching of the antenna

31. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	On and off
B	High and low
C	Mark and space
D	Dot and dash

32. - G9A01

Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

Select	Answer
A	The radius of the conductors and the frequency of the signal
B	The frequency of the signal and the length of the line
C	The distance between the centers of the conductors and the radius of the conductors
D	The distance between the centers of the conductors and the length of the line

33. - G9B02

Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Slope the radials upward
B	Slope the radials downward
C	Lengthen the radials beyond one wavelength
D	Coil the radials

34. - G9C08

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

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

35. - G9D02

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

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