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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	3650 kHz
B	1855 kHz
C	3560 kHz
D	2560 kHz

2. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	A beacon station may not use automatic control
B	The frequency must be coordinated with the National Beacon Organization
C	The frequency must be posted on the Internet or published in a national periodical
D	There must be no more than one beacon signal transmitting in the same band from the same station location

3. - G1C06

Which of the following is a limitation on transmitter power on the 1.8 MHz band?

Select	Answer
A	1500 watts PEP output
B	1200 watts PEP output
C	200 watts PEP output
D	1000 watts PEP output

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
B	There are no requirements other than being able to show a copy of the expired license
C	They must have a letter from the FCC showing they once held an amateur or commercial license
D	The applicant must pass the current element 2 exam

5. - G1E07

With which foreign countries is third party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?

Select	Answer
A	Every foreign country, unless there is a third party agreement in effect with that country
B	Countries in ITU Region 1
C	Any country which is not a member of the International Amateur Radio Union (IARU)
D	Countries in ITU Region 2

6. - G2A09

Why do most amateur stations use lower sideband on the 160-meter, 75-meter and 40-meter bands?

Select	Answer
A	Because it is fully compatible with an AM detector
B	Lower sideband is more efficient than upper sideband at these frequencies
C	Current amateur practice is to use lower sideband on these frequency bands
D	Lower sideband is the only sideband legal on these frequency bands

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

8. - G2C07

When sending CW, what does a "C" mean when added to the RST report?

Select	Answer
A	Key clicks
B	Chirpy or unstable signal
C	Report was read from an S meter rather than estimated
D	100 percent copy

9. - G2D08

What is a reason why many amateurs keep a station log?

Select	Answer
A	The log provides evidence of operation needed to renew a license without retest
B	The ITU requires a log of all international contacts
C	To help with a reply if the FCC requests information
D	The ITU requires a log of all international third party traffic

10. - G2E01

Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?

Select	Answer
A	USB
B	LSB
C	CW
D	DSB

11. - G3A15

How long does it take charged particles from coronal mass ejections to affect radio propagation on the Earth?

Select	Answer
A	20 to 40 hours
B	28 days
C	14 days
D	4 to 8 minutes

12. - G3B02

Which of the following is a good indicator of the possibility of sky-wave propagation on the 6-meter band?

Select	Answer
A	Severe attenuation of signals on the 10-meter band
B	Long delayed echoes on the 10-meter band
C	Long skip sky-wave propagation on the 10-meter band
D	Short skip sky-wave propagation on the 10-meter band

13. - G3C09

What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

Select	Answer
A	Short-path skip
B	Scatter
C	Sporadic-E skip
D	Faraday rotation

14. - G4A05

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

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

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Measuring the turns ratio of a power transformer
B	Determining the impedance of an unknown or unmarked coaxial cable
C	Measuring the front to back ratio of an antenna
D	Determining the gain of a directional antenna

16. - G4C06

What effect can be caused by a resonant ground connection?

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

17. - G4D02

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

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

18. - G4E01

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

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

19. - G5A12

What is one reason to use an impedance matching transformer?

Select	Answer
A	To minimize transmitter power output
B	To maximize the transfer of power
C	To reduce power supply ripple
D	To minimize radiation resistance

20. - G5B11

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

Select	Answer
A	1.00
B	1.414
C	0.707
D	2.00

21. - G5C06

What is the RMS voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC?

Select	Answer
A	2370 volts
B	540 volts
C	5.9 volts
D	26.7 volts

22. - G6A16

What will happen to the resistance if the temperature of a resistor is increased?

Select	Answer
A	It will stay the same
B	It will become time dependent
C	It will change depending on the resistor's reactance coefficient
D	It will change depending on the resistor's temperature coefficient

23. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	Beyond cutoff
B	Reverse Biased
C	At the Zener voltage
D	Forward Biased

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

25. - G7B01

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

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

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By using direct signal phasing
B	By differential spurious phasing
C	By converting the signal from analog to digital and using digital processing
D	By converting the signal from digital to analog and taking the difference of mixing products

27. - G8A02

What is the name of the process that changes the phase angle of an RF wave to convey information?

Select	Answer
A	Radian inversion
B	Phase modulation
C	Phase convolution
D	Angle convolution

28. - G8B09

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

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

29. - G8C08

Which of the following statements is true about PSK31?

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

30. - G9A08

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

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

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	8 feet
B	21 feet
C	11 feet
D	16 feet

32. - G9C10

Which of the following is a Yagi antenna design variable that could be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth?

Select	Answer
A	The spacing of each element along the boom
B	All of these choices are correct
C	The number of elements on the boom
D	The physical length of the boom

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They have poor harmonic rejection
B	They must be used with an antenna tuner
C	They must be fed with open wire line
D	They present low impedance on all design frequencies

34. - G0A06

What precaution should be taken when installing a ground-mounted antenna?

Select	Answer
A	It should limited to 10 feet in height
B	It should be installed such that it is protected against unauthorized access
C	It should not be installed in a wet area
D	It should not be installed higher than you can reach

35. - G0B14

Which of the following is covered by the National Electrical Code?

Select	Answer
A	RF exposure limits of the human body
B	Acceptable modulation limits
C	Electrical safety inside the ham shack
D	Acceptable bandwidth limits