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. - G1A10

Which of the following frequencies is available to a control operator holding a General Class license?

Select	Answer
A	28.020 MHz
B	All of these choices are correct
C	28.350 MHz
D	28.550 MHz

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	Monitor the frequency before transmitting
B	Insure that the frequency and mode selected are within your license class privileges
C	Follow generally accepted band plans agreed to by the Amateur Radio community
D	All of these choices are correct

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	200 watts PEP output
B	50 watts PEP output
C	An effective radiated power equivalent to 100 watts from a half-wave dipole
D	1500 watts PEP output

4. - G1D09

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

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

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	Information must be exchanged in English
B	The control operator must have at least a General Class license
C	All of these choices are correct
D	The foreign amateur station must be in a country with which the United States has a third party agreement

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

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

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
B	A portion of the band that has been voluntarily set aside for digital contacts only
C	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
D	An FCC rule that allows only digital contacts in that portion of the band

8. - G2C08

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

Select	Answer
A	KN
B	BK
C	AR
D	SK

9. - G2D11

Which HF antenna would be the best to use for minimizing interference?

Select	Answer
A	A quarter-wave vertical antenna
B	An omnidirectional antenna
C	An isotropic antenna
D	A directional antenna

10. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

Select	Answer
A	Send broadcast packets containing your call sign while in MONITOR mode
B	Send a NAK response continuously so that the sending station has to pause
C	Joining an existing contact is not possible, PACTOR connections are limited to two stations
D	Transmit a steady carrier until the PACTOR protocol times out and disconnects

11. - G3A03

Approximately how long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio propagation on the Earth?

Select	Answer
A	8 minutes
B	1 to 2 hours
C	20 to 40 hours
D	28 days

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just below the critical frequency
B	Select a frequency just above the LUF
C	Select a frequency just above the critical frequency
D	Select a frequency just below the MUF

13. - G3C02

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

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

14. - G4A07

What condition can lead to permanent damage to a solid-state RF power amplifier?

Select	Answer
A	Shorting the input signal to ground
B	Excessive drive power
C	Insufficient drive power
D	Low input SWR

15. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Standing wave ratio
B	Antenna front-to-back ratio
C	Radio wave propagation
D	RF interference

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Forward-biased diode
B	Bypass capacitor
C	Bypass inductor
D	Reverse-biased diode

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It reduces intermodulation distortion
B	It increases peak power
C	It increases average power
D	It reduces harmonic distortion

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the battery using heavy gauge wire
B	To the alternator or generator using resistor wire
C	To the alternator or generator using heavy gauge wire
D	To the battery using resistor wire

19. - G5A08

Why is impedance matching important?

Select	Answer
A	So the source can deliver maximum power to the load
B	To ensure that there is less resistance than reactance in the circuit
C	To ensure that the resistance and reactance in the circuit are equal
D	So the load will draw minimum power from the source

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	25.9 percent
B	10.9 percent
C	20.5 percent
D	12.2 percent

21. - G5C18

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

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

22. - G6A07

What are the stable operating points for a bipolar transistor used as a switch in a logic circuit?

Select	Answer
A	Its enhancement and depletion modes
B	Its saturation and cutoff regions
C	Its active region (between the cutoff and saturation regions)
D	Its peak and valley current points

23. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	Better suited for power supply regulation
B	Low power consumption
C	Better suited for RF amplification
D	High power handling capability

24. - G7A06

What portion of the AC cycle is converted to DC by a full-wave rectifier?

Select	Answer
A	90 degrees
B	270 degrees
C	180 degrees
D	360 degrees

25. - G7B10

Which of the following is a characteristic of a Class A amplifier?

Select	Answer
A	No need for bias
B	High Efficiency
C	Low standby power
D	Low distortion

26. - G7C11

What is meant by the term "software defined radio" (SDR)?

Select	Answer
A	A radio that uses crystal filters designed using software
B	A computer model that can simulate performance of a radio to aid in the design process
C	A radio that provides computer interface for automatic logging of band and frequency
D	A radio in which most major signal processing functions are performed by software

27. - G8A01

How is an FSK signal generated?

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

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Symbol rate and bandwidth are not related
B	Bandwidth is always half the symbol rate
C	Lower symbol rates require wider bandwidth
D	Higher symbol rates require wider bandwidth

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Upper case letters make the signal stronger
B	Upper case letters use longer Varicode signals and thus slow down transmission
C	Higher power is needed as compared to RTTY for similar error rates
D	Varicode Error Correction is used to ensure accurate message reception

30. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

Select	Answer
A	1:5
B	5:1
C	50:1
D	2:1

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	263 feet
C	42 feet
D	131 feet

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	2.54 dB higher
B	3 dB lower
C	3 dB higher
D	About the same

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	All of these choices are correct
B	It has high losses compared to other types of antennas
C	It has poor directivity
D	Its impedance is too low for effective matching

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

35. - G0B13

What must you do when powering your house from an emergency generator?

Select	Answer
A	Disconnect the incoming utility power feed
B	Insure that the generator is not grounded
C	Insure that all lightning grounds are disconnected
D	All of these choices are correct