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. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Observation of propagation and reception
B	Identifying net frequencies
C	Automatic identification of repeaters
D	Transmission of bulletins of general interest to Amateur Radio licensees

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	300 baud
B	1200 baud
C	56 kilobaud
D	19.6 kilobaud

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Universal Licensing System
B	A Volunteer Examiner Coordinator
C	The Wireless Telecommunications Bureau
D	The Federal Communications Commission

5. - G1E07

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

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

6. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

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

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	1 to 3 kHz
B	3 to 6 kHz
C	150 to 500 Hz
D	5 to 50 Hz

8. - G2C09

What does the Q signal "QSL" mean?

Select	Answer
A	I acknowledge receipt
B	Send slower
C	We have worked before
D	We have already confirmed by card

9. - G2D11

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

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

10. - G2E07

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

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

11. - G3A10

What causes HF propagation conditions to vary periodically in a 28 day cycle?

Select	Answer
A	The position of the Moon in its orbit
B	Long term oscillations in the upper atmosphere
C	The Sun's rotation on its axis
D	Cyclic variation in the Earth's radiation belts

12. - G3B05

What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?

Select	Answer
A	They are bent back to the Earth
B	They pass through the ionosphere
C	They are bent and trapped in the ionosphere to circle the Earth
D	They are amplified by interaction with the ionosphere

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	Sporadic-E skip
C	Scatter
D	Faraday rotation

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	All of these choices are correct
B	Frequent connection timeouts
C	The transmitter signal is distorted
D	The VOX circuit does not un-key the transmitter

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

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 inductor
C	Reverse-biased diode
D	Bypass capacitor

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Increase transmitter bass response for more natural sounding SSB signals
B	Decrease high-frequency voice output to prevent out of band operation
C	Prevent distortion of voice signals
D	Increase the intelligibility of transmitted phone signals during poor conditions

18. - G4E08

What is the name of the process by which sunlight is changed directly into electricity?

Select	Answer
A	Photon emission
B	Photon decomposition
C	Photovoltaic conversion
D	Photosynthesis

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Ohm
B	Ampere
C	Watt
D	Volt

20. - G5B01

What dB change represents a two-times increase or decrease in power?

Select	Answer
A	Approximately 2 dB
B	Approximately 3 dB
C	Approximately 6 dB
D	Approximately 12 dB

21. - G5C04

What is the total resistance of three 100 ohm resistors in parallel?

Select	Answer
A	300 ohms
B	0.30 ohms
C	33.3 ohms
D	0.33 ohms

22. - G6A02

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

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

23. - G6B11

What is a microprocessor?

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

24. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	High frequency operation allows the use of smaller components
B	All of these choices are correct
C	Faster switching time makes higher output voltage possible
D	Fewer circuit components are required

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	A filter and an amplifier operating in a feedback loop
B	A frequency multiplier and a mixer
C	An amplifier and a divider
D	A circulator and a filter operating in a feed-forward loop

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	An analog to digital converter
B	All of the these choices are correct
C	A digital to analog converter
D	A digital processor chip

27. - G8A03

What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

Select	Answer
A	Frequency convolution
B	Frequency conversion
C	Frequency transformation
D	Frequency modulation

28. - G8B03

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

Select	Answer
A	Cancellation
B	Heterodyning
C	Phase inverting
D	Synthesizing

29. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A 5-bit code with additional start and stop bits
B	A code using SELCAL and LISTEN
C	A code using error detection and correction
D	A 7-bit code with start, stop and parity bits

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	There is no interaction between transmission line loss and SWR
C	High SWR makes it difficult to measure transmission line loss
D	High SWR reduces the relative effect of transmission line loss

31. - G9B12

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

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

32. - G9C17

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

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

33. - G9D03

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

Select	Answer
A	Between 1/10 and 1/4 wavelength
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	As close to one wavelength as possible

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

35. - G0B04

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

Select	Answer
A	Lack of nitrogen for adequate combustion
B	Lack of oxygen for adequate combustion
C	Danger of carbon monoxide poisoning
D	Danger of engine over torque