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

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	The generator should be operated in a well-ventilated area
B	All these choices are correct
C	The generator must be insulated from ground
D	Fuel should be stored near the generator for rapid refueling in case of an emergency

3. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	17 meters
B	12 meters
C	30 meters
D	160 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 IEEE
C	The ITU
D	The FCC

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	1200 watts PEP output
B	1000 watts PEP output
C	200 watts PEP output
D	1500 watts PEP output

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
B	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
C	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
D	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Only during an FCC-declared general state of communications emergency
B	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
C	Only if the 10-meter repeater control operator holds at least a General class license
D	Under no circumstances

8. - G2A11

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

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

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	Inform your local emergency coordinator
B	Immediately decrease power to avoid interfering with the station in distress
C	Acknowledge the station in distress and determine what assistance may be needed
D	Immediately cease all transmissions

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Are you busy?” or “Is this frequency in use?”
B	“Will you keep the frequency clear?”
C	“Are you listening only for a specific station?”
D	“Are you operating full break-in?” or “Can you operate full break-in?”

11. - G2D01

What is the Volunteer Monitor Program?

Select	Answer
A	Amateur volunteers who conduct amateur licensing examinations
B	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
C	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
D	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency

12. - G2E12

Which of the following describes Winlink?

Select	Answer
A	A form of Packet Radio
B	An amateur radio wireless network to send and receive email on the internet
C	All of the above
D	A wireless network capable of both VHF and HF band operation

13. - G3A05

What is the solar flux index?

Select	Answer
A	Another name for the American sunspot number
B	A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth
C	A measure of solar radiation with a wavelength of 10.7 centimeters
D	A count of sunspots that is adjusted for solar emissions

14. - G3B09

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the F2 region?

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

15. - G3C09

What type of propagation allows signals to be heard in the transmitting station’s skip zone?

Select	Answer
A	Faraday rotation
B	Chordal hop
C	Short-path
D	Scatter

16. - G4A13

What is the purpose of using a receive attenuator?

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

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The local oscillator of the transmitter
B	The attenuated RF output of the transmitter
C	An external RF oscillator
D	The transmitter balanced mixer output

18. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Using a balun to feed an unbalanced antenna
B	Lack of rectification of the transmitter’s signal in power conductors
C	Arcing at a poor electrical connection
D	Not using a balun or line isolator to feed balanced antennas

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

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Impedance is equal to the geometric mean of the inductance and capacitance
B	Resonance causes impedance to be very high
C	Impedance is equal to the arithmetic mean of the inductance and capacitance
D	Resonance causes impedance to be very low

22. - G5B12

What is the RMS voltage across a 50-ohm dummy load dissipating 1200 watts?

Select	Answer
A	245 volts
B	346 volts
C	173 volts
D	692 volts

23. - G5C12

What is the capacitance of a 20-microfarad capacitor connected in series with a 50-microfarad capacitor?

Select	Answer
A	14.3 microfarads
B	1,000 microfarads
C	70 microfarads
D	0.07 microfarads

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. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	In the tunnel-effect region
B	Forward biased
C	Reverse biased
D	At the Zener voltage

26. - G7A01

What is the function of a power supply bleeder resistor?

Select	Answer
A	It removes shock hazards from the induction coils
B	It eliminates ground loop current
C	It discharges the filter capacitors when power is removed
D	It acts as a fuse for excess voltage

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The inductance and capacitance in the tank circuit
B	The number of stages in the divider
C	The number of stages in the counter
D	The time delay of the lag circuit

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

Select	Answer
A	45 degrees
B	Zero
C	180 degrees
D	90 degrees

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. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Balanced converter
B	Reactance modulator
C	Mixer
D	Multiplier

31. - G8C13

What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?

Select	Answer
A	Overmodulation
B	Backscatter propagation
C	Long path propagation
D	Insufficient modulation

32. - G9A10

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

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

33. - G9B09

Which of the following is an advantage of using a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower ground losses
B	Lower feed point impedance
C	Shorter radials
D	Lower radiation resistance

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Gain increases
B	Resonant frequency is lower
C	Beamwidth increases
D	Front-to-back ratio decreases

35. - G9D04

What is the primary function of antenna traps?

Select	Answer
A	To notch spurious frequencies
B	To prevent out-of-band operation
C	To enable multiband operation
D	To provide balanced feed point impedance