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	3900 kHz
C	4005 kHz
D	1875 kHz

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis
B	Only when there is no other means of communications readily available
C	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
D	Never

3. - G1C06

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

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

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	Receipt of a CSCE for General Class
C	Notification to the FCC that you want to give an examination
D	Possession of a properly obtained telegraphy license

5. - G1E09

What language must be used when identifying your station if you are using a language other than English in making a contact using phone emission?

Select	Answer
A	The language being used for the contact
B	English, Spanish, French, or German
C	English only
D	Any language recognized by the United Nations

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	Vestigial sideband
C	Lower sideband
D	Upper sideband

7. - G2B06

What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Listen for 2 minutes before calling CQ
B	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response
C	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
D	Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign

8. - G2C08

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

Select	Answer
A	KN
B	AR
C	SK
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	Date and time of contact
C	Band and/or frequency of the contact
D	All of these choices are correct

10. - G2E01

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

Select	Answer
A	LSB
B	DSB
C	USB
D	CW

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

Select	Answer
A	15 meters, 12 meters and 10 meters
B	30 meters and 20 meters
C	80 meters and 160 meters
D	60 meters and 40 meters

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

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E-region is not present
B	Energy is scattered into the skip zone through several different radio wave paths
C	The ionospheric layer involved is unstable
D	Ground waves are absorbing much of the signal

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	No change will be observed
B	A pronounced dip
C	A slow, rhythmic oscillation
D	A pronounced peak

15. - G4B10

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

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

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Use a ground loop for best conductivity
B	Install an RF filter in series with the ground wire
C	Install a few ferrite beads on the ground wire where it connects to your station
D	Connect all equipment grounds together

17. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 1.5 times
B	Approximately 4 times
C	Approximately 2 times
D	Approximately 8 times

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	The battery charging system
B	The fuel delivery system
C	The vehicle control computer
D	All of these choices are correct

19. - G5A05

How does an inductor react to AC?

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

20. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The peak value
B	The RMS value
C	The peak-to-peak value
D	The reciprocal of the RMS value

21. - G5C18

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

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

22. - G6A11

Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

Select	Answer
A	A varistor
B	A bipolar transistor
C	A field effect transistor
D	A tunnel diode

23. - G6B17

What is the general description of a DIN type connector?

Select	Answer
A	A special connector for microwave interfacing
B	A special watertight connector for use in marine applications
C	A family of multiple circuit connectors suitable for audio and control signals
D	A DC power connector rated for currents between 30 and 50 amperes

24. - G7A05

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

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

25. - G7B03

Which of the following describes the function of a two input AND gate?

Select	Answer
A	Output is low only when both inputs are high
B	Output is low when either or both inputs are high
C	Output is high only when both inputs are high
D	Output is high when either or both inputs are low

26. - G7C11

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

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

27. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Phase modulation
B	Frequency modulation
C	Amplitude modulation
D	Frequency shift keying

28. - G8B02

If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

Select	Answer
A	Quadrature noise
B	Intermediate interference
C	Image response
D	Mixer interference

29. - G8C02

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

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

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 100 feet
B	Decibels per 100 feet
C	Ohms per 1000 feet
D	Decibels per 1000 feet

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	On the surface of the Earth or buried a few inches below the ground
B	As high as possible above the ground
C	Parallel to the antenna element
D	At the center of the antenna

32. - G9C04

Which statement about a three-element, single-band Yagi antenna is true?

Select	Answer
A	The reflector is normally the shortest element
B	All of the elements must be the same length
C	The reflector is normally the longest element
D	The director is normally the longest element

33. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	As close to one wavelength as possible
B	Height is not critical as long as it is significantly more than 1/2 wavelength
C	As close to 1/2 wavelength as possible
D	Between 1/10 and 1/4 wavelength

34. - G0A06

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

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

35. - G0B06

Why must the metal enclosure of every item of station equipment be grounded?

Select	Answer
A	It prevents signal overload
B	It ensures that the neutral wire is grounded
C	It prevents a blown fuse in the event of an internal short circuit
D	It ensures that hazardous voltages cannot appear on the chassis