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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	3750 kHz
B	1875 kHz
C	4005 kHz
D	3900 kHz

2. - G1B12

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 IEEE
C	The FCC
D	The Control Operator

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

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

4. - G1D05

Which of the following must a person have before they can be an administering VE for a Technician Class license examination?

Select	Answer
A	Receipt of a CSCE for General Class
B	Notification to the FCC that you want to give an examination
C	Possession of a properly obtained telegraphy license
D	An FCC General Class or higher license and VEC accreditation

5. - G1E12

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

6. - G2A05

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

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

7. - G2B03

If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?

Select	Answer
A	Tell the interfering stations to change frequency
B	As a common courtesy, move your contact to another frequency
C	Report the interference to your local Amateur Auxiliary Coordinator
D	Increase power to overcome interference

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Send slower
B	Increase your power
C	Change frequency
D	Repeat everything twice

9. - G2D01

What is the Amateur Auxiliary to the FCC?

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

10. - G2E03

What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?

Select	Answer
A	All of these choices are correct
B	Frequent retries or timeouts
C	Long pauses in message transmission
D	Failure to establish a connection between stations

11. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A temporary disturbance in the Earth's magnetosphere
B	A sudden drop in the solar flux index
C	Ripples in the ionosphere
D	A thunderstorm which affects radio propagation

12. - G3B11

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

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

13. - G3C02

Where on the Earth do ionospheric layers reach their maximum height?

Select	Answer
A	Where the Sun is overhead
B	Where the Sun has just set
C	Where the Sun is on the opposite side of the Earth
D	Where the Sun is rising

14. - G4A05

What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

Select	Answer
A	To reduce harmonic radiation
B	To balance the transmitter audio frequency response
C	To increase overall efficiency
D	To reduce distortion due to excessive drive

15. - G4B01

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

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

16. - G4C06

What effect can be caused by a resonant ground connection?

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

17. - G4D04

What does an S meter measure?

Select	Answer
A	Received signal strength
B	Conductance
C	Transmitter power output
D	Impedance

18. - G4E01

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

Select	Answer
A	To allow remote tuning
B	To increase the power handling capacity of a whip antenna
C	To allow automatic band changing
D	To electrically lengthen a physically short antenna

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Volt
B	Ohm
C	Ampere
D	Watt

20. - G5B05

How many watts are dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms resistance?

Select	Answer
A	Approximately 61 milliwatts
B	Approximately 61 watts
C	Approximately 11 milliwatts
D	Approximately 11 watts

21. - G5C12

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

Select	Answer
A	0.07 microfarads
B	1000 microfarads
C	70 microfarads
D	14.3 microfarads

22. - G6A03

What is the approximate junction threshold voltage of a germanium diode?

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

23. - G6B13

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

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

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 1
B	Symbol 7
C	Symbol 2
D	Symbol 11

25. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Add the RF input power to the DC output power
B	Divide the DC input power by the DC output power
C	Divide the RF output power by the DC input power
D	Multiply the RF input power by the reciprocal of the RF output power

26. - G7C05

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

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

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By reconfiguring the CW keying input to act as a tone generator
B	By using a transceiver's computer data interface protocol to change frequencies
C	By changing an oscillator's frequency directly with a digital control signal
D	By keying an FM transmitter with a sub-audible tone

28. - G8B09

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

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

29. - G8C09

What does the number 31 represent in "PSK31"?

Select	Answer
A	The year in which PSK31 was invented
B	The approximate transmitted symbol rate
C	The number of characters that can be represented by PSK31
D	The version of the PSK protocol

30. - G9A01

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

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

31. - G9B02

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

Select	Answer
A	Slope the radials upward
B	Shorten the radials
C	Lengthen the radials
D	Slope the radials downward

32. - G9C14

How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?

Select	Answer
A	About twice as much
B	About 2/3 as much
C	About 1.5 times as much
D	About the same

33. - G9D06

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

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

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Turn off the transmitter and disconnect the feed line
B	Wear a radiation badge
C	Ensure that you and the antenna structure are grounded
D	All of these choices are correct

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

Select	Answer
A	Unground the base of the tower
B	Notify the electric company that a person will be working on the tower
C	Make sure all circuits that supply power to the tower are locked out and tagged
D	All of these choices are correct

Figure G7-1