US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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1. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	12 meters
B	30 meters
C	160 meters
D	17 meters

2. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the Amateur Service?

Select	Answer
A	Only "10 codes" are permitted
B	Only "Q" signals are permitted
C	They are not permitted
D	They may be used if they do not obscure the meaning of a message

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D01

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

Select	Answer
A	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years
B	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
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

5. - G1E13

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands
B	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
C	On any band segment where digital operation is permitted
D	Only in the non-phone Extra Class segments of the bands

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Phase modulation
B	Frequency modulation
C	Single sideband
D	Double sideband

7. - G2B05

What is the customary minimum frequency separation between SSB signals under normal conditions?

Select	Answer
A	Between 150 and 500 Hz
B	Approximately 10 kHz
C	Approximately 3 kHz
D	Approximately 6 kHz

8. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	The speed at which the CQ was sent
B	A slow speed until contact is established
C	At the standard calling speed of 5 wpm
D	The fastest speed at which you are comfortable copying

9. - G2D10

What is QRP operation?

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

10. - 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	Send QRL in Morse code
C	Send an email to the system control operator
D	Transmit a connect message on the station's published frequency

11. - G3A01

What is the significance of the sunspot number with regard to HF propagation?

Select	Answer
A	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
B	A zero sunspot number indicate radio propagation is not possible on any band
C	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
D	All of these choices are correct.

12. - G3B11

What happens to HF propagation when the LUF exceeds the MUF?

Select	Answer
A	Propagation over the path on all HF frequencies is enhanced
B	HF communications over the path are enhanced
C	Double hop propagation along the path is more common
D	No HF radio frequency will support ordinary sky-wave communications over the path

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	All of these choices are correct
B	Because it does not absorb radio waves as much as other ionospheric regions
C	Because it is the densest ionospheric layer
D	Because it is the highest ionospheric region

14. - G4A03

What is normally meant by operating a transceiver in "split" mode?

Select	Answer
A	The transmitter is emitting an SSB signal, as opposed to DSB operation
B	The radio is operating at half power
C	The transceiver is operating from an external power source
D	The transceiver is set to different transmit and receive frequencies

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two swept frequency tones
B	Two audio frequency range square wave signals of equal amplitude
C	Two non-harmonically related audio signals
D	Two audio signals of the same frequency shifted 90 degrees

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Use a ground loop for best conductivity
B	Install an RF filter in series with the ground wire
C	Connect all equipment grounds together
D	Install a few ferrite beads on the ground wire where it connects to your station

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Decrease high-frequency voice output to prevent out of band operation
B	Increase the intelligibility of transmitted phone signals during poor conditions
C	Prevent distortion of voice signals
D	Increase transmitter bass response for more natural sounding SSB signals

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To increase the "Q" of the antenna
B	To narrow the operating bandwidth of the antenna
C	To reduce high voltage discharge from the tip of the antenna
D	To reduce the chance of damage if the antenna should strike an object

19. - G5A07

What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?

Select	Answer
A	The source delivers minimum power to the load
B	The source can deliver maximum power to the load
C	No current can flow through the circuit
D	The electrical load is shorted

20. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The RMS value
B	The peak value
C	The reciprocal of the RMS value
D	The peak-to-peak value

21. - G5C18

What is the value in microfarads of a 4700 nanofarad (nF) capacitor?

Select	Answer
A	47 microfarads
B	4.7 microfarads
C	0.47 microfarads
D	47,000 microfarads

22. - G6A06

Which of the following is an advantage of using a Schottky diode in an RF switching circuit rather than a standard silicon diode?

Select	Answer
A	Longer switching times
B	Lower inductance
C	Lower capacitance
D	Higher breakdown voltage

23. - G6B13

Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?

Select	Answer
A	PL-259
B	RJ-11
C	DB-25
D	Octal

24. - G7A03

What is the peak-inverse-voltage across the rectifiers in a full-wave bridge power supply?

Select	Answer
A	Half the normal output voltage of the power supply
B	Equal to the normal peak output voltage of the power supply
C	Double the normal peak output voltage of the power supply
D	One-quarter the normal output voltage of the power supply

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

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

26. - G7C05

Which of the following is an advantage of a transceiver controlled by a direct digital synthesizer (DDS)?

Select	Answer
A	Variable frequency with the stability of a crystal oscillator
B	Relatively low power consumption
C	Relatively high power output
D	Wide tuning range and no need for band switching

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

Select	Answer
A	The transmitter's automatic level control (ALC) is properly adjusted
B	Signal distortion caused by excessive drive
C	The transmitter's carrier is properly suppressed
D	Signal distortion caused by insufficient collector current

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

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

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	8
B	7
C	5
D	The number varies

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	75 ohms
B	50 ohms
C	100 ohms
D	300 ohms

31. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	84 feet
B	42 feet
C	263 feet
D	131 feet

32. - G9C04

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	The reflector is normally the longest element
B	The director is normally the longest element
C	All of the elements must be the same length
D	The reflector is normally the shortest element

33. - G9D06

Which of the following is an advantage of a log periodic antenna?

Select	Answer
A	Polarization diversity
B	Harmonic suppression
C	Wide bandwidth
D	Higher gain per element than a Yagi antenna

34. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?

Select	Answer
A	All of these choices are correct
B	Post a copy of OET Bulletin 65 in the station
C	Post a copy of FCC Part 97.13 in the station
D	Perform a routine RF exposure evaluation

35. - G0B04

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

Select	Answer
A	Danger of carbon monoxide poisoning
B	Lack of oxygen for adequate combustion
C	Lack of nitrogen for adequate combustion
D	Danger of engine over torque