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	24900 kHz
B	14250 kHz
C	18155 kHz
D	21300 kHz

2. - G1B02

With which of the following conditions must beacon stations comply?

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

3. - G1C02

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

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

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	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
C	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
D	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

5. - G1E06

Which of the following applies in the event of interference between a coordinated repeater and an uncoordinated repeater?

Select	Answer
A	The frequency coordinator bears primary responsibility to resolve the interference
B	The licensee of the coordinated repeater has primary responsibility to resolve the interference
C	The licensee of the uncoordinated repeater has primary responsibility to resolve the interference
D	Both repeater licensees share equal responsibility to resolve the interference

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	The caller is looking for any station outside their own country
B	A distress call
C	A general call for any station
D	The caller is listening for a station in Germany

7. - G2B08

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

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

8. - G2C05

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

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

9. - G2D08

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

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

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.000 - 14.050 MHz
B	14.150 - 14.225 MHz
C	14.070 - 14.100 MHz
D	14.275 - 14.350 MHz

11. - G3A15

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

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

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	No HF radio frequency will support ordinary sky-wave communications over the path
C	Double hop propagation along the path is more common
D	HF communications over the path are enhanced

13. - G3C01

Which ionospheric layer is closest to the surface of the Earth?

Select	Answer
A	The E layer
B	The F2 layer
C	The D layer
D	The F1 layer

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To tune in stations that are slightly off frequency without changing your transmit frequency
B	To avoid interference from stations very close to the receive frequency
C	To change frequency rapidly
D	To permit listening on a different frequency from that on which you are transmitting

15. - G4B03

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

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

16. - G4C13

Which of the following can perform automatic notching of interfering carriers?

Select	Answer
A	A Digital Signal Processor (DSP) filter
B	Bandpass tuning
C	A noise limiter
D	Balanced mixing

17. - G4D06

Where is an S meter found?

Select	Answer
A	In a conductance bridge
B	In an SWR bridge
C	In a transmitter
D	In a receiver

18. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.5 VDC
B	0.02 VDC
C	1.38 VDC
D	0.2 VDC

19. - G5A12

What is one reason to use an impedance matching transformer?

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

20. - G5B04

How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	24 watts
B	6 watts
C	2.4 watts
D	60 watts

21. - G5C11

What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

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

22. - G6A02

What is an advantage of the low internal resistance of nickel-cadmium batteries?

Select	Answer
A	Long life
B	High discharge current
C	Rapid recharge
D	High voltage

23. - G6B03

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

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

24. - G7A11

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

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

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. - 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 radio in which most major signal processing functions are performed by software
C	A computer model that can simulate performance of a radio to aid in the design process
D	A radio that provides computer interface for automatic logging of band and frequency

27. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

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

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	VFO
B	BFO
C	Mixer
D	Discriminator

29. - G8C02

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

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

30. - G9A14

What is the interaction between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	If a transmission line is lossy, high SWR will increase the loss
B	High SWR makes it difficult to measure transmission line loss
C	High SWR reduces the relative effect of transmission line loss
D	There is no interaction between transmission line loss and SWR

31. - G9B09

Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower ground reflection losses
B	Lower radiation resistance
C	Shorter Radials
D	Lower feed point impedance

32. - G9C17

Approximately how long is each leg of a symmetrical delta-loop antenna?

Select	Answer
A	1/3 wavelength
B	1/4 wavelength
C	1/2 wavelength
D	2/3 wavelength

33. - G9D06

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

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

34. - G0A07

What effect does transmitter duty cycle have when evaluating RF exposure?

Select	Answer
A	Low duty cycle transmitters are exempt from RF exposure evaluation requirements
B	High duty cycle transmitters are exempt from RF exposure requirements
C	A higher transmitter duty cycle permits greater short-term exposure levels
D	A lower transmitter duty cycle permits greater short-term exposure levels

35. - G0B05

Which of the following conditions will cause a Ground Fault Circuit Interrupter (GFCI) to disconnect the 120 or 240 Volt AC line power to a device?

Select	Answer
A	Overvoltage on the voltage-carrying wires
B	All of these choices are correct
C	Current flowing from one or more of the voltage-carrying wires to the neutral wire
D	Current flowing from one or more of the voltage-carrying wires directly to ground

Figure G7-1