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. - G0A11

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

Select	Answer
A	Position the antenna along the edge of a wall to reduce parasitic radiation
B	Make sure the antenna is properly shielded
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. - 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	Fuel should be stored near the generator for rapid refueling in case of an emergency
D	The generator must be insulated from ground

3. - G1A06

Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?

Select	Answer
A	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
B	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
C	Amateur stations may use the band only during emergencies
D	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

Select	Answer
A	On any frequency if transmissions are in Morse code
B	21.08 MHz to 21.09 MHz
C	On any frequency if power is less than 1 watt
D	28.20 MHz to 28.30 MHz

5. - G1C06

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

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

6. - G1D09

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

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

7. - G1E09

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third-party rules that apply to other modes of communication?

Select	Answer
A	When messages are encrypted
B	When messages are not encrypted
C	When under automatic control
D	Under no circumstances

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	It occupies less bandwidth
B	It provides more power output
C	It allows “hands free” operation
D	The received signal is more natural sounding

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

10. - G2C04

What does the Q signal “QRL?” mean?

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

11. - G2D02

Which of the following are objectives of the Volunteer Monitor Program?

Select	Answer
A	To coordinate repeaters for efficient and orderly spectrum usage
B	To encourage amateur radio operators to self-regulate and comply with the rules
C	To provide emergency and public safety communications
D	To conduct efficient and orderly amateur licensing examinations

12. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Respond when the station broadcasts its SSID
B	Transmit a connect message on the station’s published frequency
C	Send an email to the system control operator
D	Send QRL in Morse code

13. - G3A13

What does the A-index measure?

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

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

15. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Only a small part of the signal energy is scattered into the skip zone
B	Propagation is via ground waves, which absorb most of the signal energy
C	Signals are scattered from the magnetosphere, which is not a good reflector
D	Propagation is via ducts in the F region, which absorb most of the energy

16. - G4A04

What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier’s TUNE control?

Select	Answer
A	A slow, rhythmic oscillation
B	A pronounced dip
C	No change will be observed
D	A pronounced peak

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

18. - G4C06

What is a possible effect of a resonant ground connection?

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

19. - G4D11

How close to the upper edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 3 kHz above the edge of the band
B	At least 1 kHz above the edge of the segment
C	At least 1 kHz below the edge of the segment
D	At least 3 kHz below the edge of the band

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	1.38 VDC
B	0.5 VDC
C	0.02 VDC
D	0.2 VDC

21. - G5A12

What occurs in an LC circuit at resonance?

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

22. - G5B14

What is the output PEP of 500 volts peak-to-peak across a 50-ohm load?

Select	Answer
A	2500 watts
B	625 watts
C	5000 watts
D	8.75 watts

23. - G5C09

What is the capacitance of three 100-microfarad capacitors connected in series?

Select	Answer
A	300 microfarads
B	0.33 microfarads
C	3.0 microfarads
D	33.3 microfarads

24. - G6A05

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

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

25. - G6B12

Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?

Select	Answer
A	Type N
B	PL-259
C	BNC
D	RCA Phono

26. - G7A09

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

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

27. - G7B07

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

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

28. - G7C04

How is a product detector used?

Select	Answer
A	Used in test gear to detect spurious mixing products
B	Used in transmitter to perform frequency multiplication
C	Used in a single sideband receiver to extract the modulated signal
D	Used in an FM receiver to filter out unwanted sidebands

29. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency modulation
B	Frequency transformation
C	Frequency convolution
D	Frequency conversion

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 improves impedance matching of the antenna
C	It is required by FCC rules
D	It results in the best signal-to-noise ratio

31. - G8C16

Which of the following provide digital voice modes?

Select	Answer
A	FT8, FT4, and FST4
B	WSPR, MFSK16, and EasyPAL
C	Winlink, PACTOR II, and PACTOR III
D	DMR, D-STAR, and SystemFusion

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
B	The feed line must be an odd number of electrical quarter wavelengths long
C	The feed line must be an even number of physical half wavelengths long
D	The antenna feed point must be at DC ground potential

33. - G9B05

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

Select	Answer
A	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
B	Antenna height has no effect on the pattern
C	If the antenna is too high, the pattern becomes unpredictable
D	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The power radiated in the major lobe compared to that in the opposite direction
B	The number of directors versus the number of reflectors
C	The ratio of forward gain to dipole gain
D	The relative position of the driven element with respect to the reflectors and directors

35. - G9D03

In which direction is the maximum radiation from a VHF/UHF “halo” antenna?

Select	Answer
A	On the same side as the feed point
B	Omnidirectional in the plane of the halo
C	Broadside to the plane of the halo
D	Opposite the feed point

Figure G7-1