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. - G0A02

Which of the following is used to determine RF exposure from a transmitted signal?

Select	Answer
A	Its power density
B	Its frequency
C	Its duty cycle
D	All these choices are correct

2. - G0B13

Where should lightning arrestors be located?

Select	Answer
A	Where the feed lines enter the building
B	At the closest power pole ground electrode
C	On the antenna, opposite the feed point
D	In series with each ground lead

3. - G1A08

Which HF bands have segments exclusively allocated to Amateur Extra licensees?

Select	Answer
A	60 meters, 30 meters, 17 meters, and 12 meters
B	All HF bands except 160 meters and 10 meters
C	All HF bands
D	80 meters, 40 meters, 20 meters, and 15 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 ITU
B	The control operator
C	The IEEE
D	The FCC

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	1500 watts PEP output
B	200 watts PEP output
C	2000 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	30 days
B	180 days
C	For as long as your current license is valid
D	365 days

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 1
B	Region 3
C	Region 2
D	Region 4

8. - G2A01

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

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

9. - G2B11

How often may RACES training drills and tests be routinely conducted without special authorization?

Select	Answer
A	No more than 2 hours per week
B	No more than 1 hour per week
C	No more than 1 hour per month
D	No more than 2 hours per month

10. - G2C04

What does the Q signal “QRL?” mean?

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

11. - G2D09

Which of the following is required when participating in a contest on HF frequencies?

Select	Answer
A	Submit a log to the contest sponsor
B	All these choices are correct
C	Identify your station according to normal FCC regulations
D	Send a QSL card to the stations worked, or QSL via Logbook of The World

12. - G2E02

What is VARA?

Select	Answer
A	A radio direction finding system used on VHF and UHF
B	A low signal-to-noise digital mode used for EME (moonbounce)
C	A DX spotting system using a network of software defined radios
D	A digital protocol used with Winlink

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Improve ground wave propagation
B	Improve high-latitude HF propagation
C	Degrade ground wave propagation
D	Degrade high-latitude HF propagation

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They pass through the ionosphere
B	They are refracted back to Earth
C	They are amplified by interaction with the ionosphere
D	They are refracted and trapped in the ionosphere to circle Earth

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

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

16. - G4A13

What is the purpose of using a receive attenuator?

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

17. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An ammeter
B	An oscilloscope
C	An ohmmeter
D	A signal generator

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	Insulated wire has been used for the ground wire
B	The ground wire has high impedance on that frequency
C	Flat braid rather than round wire has been used for the ground wire
D	The ground rod is resonant

19. - G4D10

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

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

20. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To electrically lengthen a physically short antenna
B	To reduce radiation resistance
C	To increase the power handling capacity of a whip antenna
D	To lower the radiation angle

21. - G5A03

Which of the following is opposition to the flow of alternating current in an inductor?

Select	Answer
A	Reactance
B	Conductance
C	Admittance
D	Reluctance

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	12 volts
B	8.5 volts
C	34 volts
D	24 volts

23. - G5C12

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

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

24. - G6A11

What happens when an inductor is operated above its self-resonant frequency?

Select	Answer
A	Catastrophic failure is likely
B	Harmonics are generated
C	It becomes capacitive
D	Its reactance increases

25. - G6B07

Which of the following describes a type N connector?

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

26. - G7A02

Which of the following components are used in a power supply filter network?

Select	Answer
A	Diodes
B	All these choices are correct
C	Capacitors and inductors
D	Transformers and transducers

27. - G7B06

What is a shift register?

Select	Answer
A	An array of operational amplifiers used for tri-state arithmetic operations
B	A clocked array of circuits that passes data in steps along the array
C	An analog mixer
D	A digital mixer

28. - G7C14

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

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

29. - G8A06

Which of the following is characteristic of QPSK31?

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

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Odd-order
B	Intercept point
C	Even-order
D	Second harmonics

31. - G8C09

Which is true of mesh network microwave nodes?

Select	Answer
A	If one node fails, a packet may still reach its target station via an alternate node
B	Links between two nodes in a network may have different frequencies and bandwidths
C	More nodes reduce overall microwave out of band interference
D	Having more nodes increases signal strengths

32. - G9A08

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

Select	Answer
A	Between 1:1 and 5:1 depending on the reflected power at the transmitter
B	5:1
C	1:1
D	Between 1:1 and 5:1 depending on the characteristic impedance of the line

33. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	24 feet
B	16 feet
C	8 feet
D	33 feet

34. - G9C07

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

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

35. - G9D05

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

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