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. - G1A09

Which of the following frequencies is within the General Class portion of the 15-meter band?

Select	Answer
A	14250 kHz
B	24900 kHz
C	18155 kHz
D	21300 kHz

2. - G1B07

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

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

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	1.8 kHz
B	2.8 kHz
C	5.6 kHz
D	3 kHz

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

5. - G1E04

Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	When using a band where the Amateur Service is secondary
B	When a station is transmitting spread spectrum emissions
C	When operating within one mile of an FCC Monitoring Station
D	All of these choices are correct

6. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

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

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	Except during FCC declared emergencies, no one has priority access to frequencies
B	Nets always have priority
C	QSOs in progress always have priority
D	Contest operations must always yield to non-contest use of frequencies

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	SK
B	KN
C	AR
D	BK

9. - G2D09

What information is traditionally contained in a station log?

Select	Answer
A	Call sign of station contacted and the signal report given
B	All of these choices are correct
C	Band and/or frequency of the contact
D	Date and time of contact

10. - G2E07

What segment of the 80-meter band is most commonly used for digital transmissions?

Select	Answer
A	3775 - 3825 kHz
B	3500 - 3525 kHz
C	3570 - 3600 kHz
D	3700 - 3750 kHz

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Improved ground-wave propagation
B	Improved high-latitude HF propagation
C	Improved chances of UHF ducting
D	Degraded high-latitude HF propagation

12. - G3B09

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

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

13. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have high intelligibility
B	All of these choices are correct
C	They have a wavering sound
D	They have very large swings in signal strength

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Automatic generation of strings of dots and dashes for CW operation
B	Automatic transmit/receive switching
C	VOX operation
D	Computer interface for PSK and RTTY operation

15. - G4B03

Which of the following is the best instrument to use when checking the keying waveform of a CW transmitter?

Select	Answer
A	A wavemeter
B	A sidetone monitor
C	An oscilloscope
D	A field strength meter

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	Fewer digital components are required
B	Mixing products are greatly reduced
C	The DSP filter is much more effective at VHF frequencies
D	A wide range of filter bandwidths and shapes can be created

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	Distorted speech
B	Splatter
C	All of these choices are correct
D	Excessive background pickup

18. - G4E04

Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?

Select	Answer
A	Drawing more than 50 watts from this socket could cause the engine to overheat
B	The socket is not wired with an RF-shielded power cable
C	The socket's wiring may be inadequate for the current drawn by the transceiver
D	The DC polarity of the socket is reversed from the polarity of modern HF transceivers

19. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the amplitude of the applied AC increases, the reactance increases
C	As the amplitude of the applied AC increases, the reactance decreases
D	As the frequency of the applied AC increases, the reactance decreases

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	2.00
B	0.707
C	1.00
D	1.414

21. - G5C16

Why is the conductor of the primary winding of many voltage step up transformers larger in diameter than the conductor of the secondary winding?

Select	Answer
A	To insure that the volume of the primary winding is equal to the volume of the secondary winding
B	To accommodate the higher current of the primary
C	To prevent parasitic oscillations due to resistive losses in the primary
D	To improve the coupling between the primary and secondary

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's tolerance value would not be adequate for such a circuit
B	The resistor could overheat
C	The resistor's internal capacitance would detune the circuit
D	The resistor's inductance could make circuit performance unpredictable

23. - G6B11

What is a microprocessor?

Select	Answer
A	A microwave detector, amplifier, and local oscillator on a single integrated circuit
B	A low power analog signal processor used as a microwave detector
C	A low voltage amplifier used in a microwave transmitter modulator stage
D	A computer on a single integrated circuit

24. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A series of DC pulses at the same frequency as the AC input
B	A series of DC pulses at twice the frequency of the AC input
C	A sine wave at half the frequency of the AC input
D	A steady DC voltage

25. - G7B01

Complex digital circuitry can often be replaced by what type of integrated circuit?

Select	Answer
A	Charge-coupled device
B	Window comparator
C	Phase detector
D	Microcontroller

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	RF amplifier
B	IF amplifier
C	Filter
D	Carrier oscillator

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Greater modulation percentage is obtainable with lower distortion
B	Available transmitter power can be used more effectively
C	Audio fidelity is improved
D	Simpler receiving equipment can be used

28. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Phase inverting
B	Cancellation
C	Heterodyning
D	Synthesizing

29. - G8C03

What part of a data packet contains the routing and handling information?

Select	Answer
A	Preamble
B	Directory
C	Footer
D	Header

30. - G9A04

What might cause reflected power at the point where a feed line connects to an antenna?

Select	Answer
A	A difference between feed line impedance and antenna feed point impedance
B	Feeding the antenna with unbalanced feed line
C	Using more transmitter power than the antenna can handle
D	Operating an antenna at its resonant frequency

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	Lengthen the radials
B	Slope the radials downward
C	Shorten the radials
D	Slope the radials upward

32. - G9C16

How does the gain of a two-element delta-loop beam compare to the gain of a two-element quad antenna?

Select	Answer
A	3 dB lower
B	3 dB higher
C	About the same
D	2.54 dB higher

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Portable direction finding at lower HF frequencies
B	Portable direction finding at higher HF frequencies
C	Directional receiving for low HF bands
D	Directional transmitting for low HF bands

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

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

35. - G0B15

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

Select	Answer
A	The generator should be located in a well-ventilated area
B	All of 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