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

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	During a declared communications emergency
B	To control a space station
C	Only with Special Temporary Authorization from the FCC
D	Only when the information is of a routine, personal nature

3. - G1C10

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

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

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. - G1E13

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	On any band segment where digital operation is permitted
B	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
C	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands
D	Only in the non-phone Extra Class segments of the bands

6. - G2A05

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

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

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	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
B	Listen for 2 minutes before calling CQ
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 the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response

8. - G2C04

What does the Q signal "QRL?" mean?

Select	Answer
A	"Are you listening only for a specific station?"
B	"Are you busy?", or "Is this frequency in use?"
C	"Will you keep the frequency clear?"
D	"Are you operating full break-in" or "Can you operate full break-in?"

9. - G2D11

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

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

10. - G2E08

In what segment of the 20-meter band are most PSK31 operations commonly found?

Select	Answer
A	At the top of the SSB phone segment, near 14.325 MHz
B	In the middle of the CW segment, near 14.100 MHz
C	At the bottom of the slow-scan TV segment, near 14.230 MHz
D	Below the RTTY segment, near 14.070 MHz

11. - G3A04

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

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

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

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

13. - G3C04

What does the term "critical angle" mean as used in radio wave propagation?

Select	Answer
A	The lowest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions
B	The long path azimuth of a distant station
C	The short path azimuth of a distant station
D	The highest takeoff angle that will return a radio wave to the Earth under specific ionospheric conditions

14. - G4A06

What type of device is often used to match transmitter output impedance to an impedance not equal to 50 ohms?

Select	Answer
A	Q Multiplier
B	Balanced modulator
C	SWR Bridge
D	Antenna coupler or antenna tuner

15. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An oscilloscope
B	An ammeter
C	An ohmmeter
D	A signal generator

16. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To remove noise from received signals
B	To provide adequate grounding
C	To increase antenna gain
D	To increase antenna bandwidth

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	Excessive background pickup
B	Splatter
C	All of these choices are correct
D	Distorted speech

18. - G4E02

What is the purpose of a corona ball on a HF mobile antenna?

Select	Answer
A	To reduce high voltage discharge from the tip of the antenna
B	To narrow the operating bandwidth of the antenna
C	To increase the "Q" of the antenna
D	To reduce the chance of damage if the antenna should strike an object

19. - G5A10

What unit is used to measure impedance?

Select	Answer
A	Ohm
B	Volt
C	Ampere
D	Watt

20. - G5B04

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

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

21. - G5C12

What is the capacitance of a 20 microfarad capacitor connected in series with a 50 microfarad capacitor?

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

22. - G6A08

Why must the cases of some large power transistors be insulated from ground?

Select	Answer
A	To improve the power dissipation capability
B	To reduce stray capacitance
C	To avoid shorting the collector or drain voltage to ground
D	To increase the beta of the transistor

23. - G6B03

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

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

24. - G7A11

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

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

25. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the divider
B	The time delay of the lag circuit
C	The number of stages in the counter
D	The inductance and capacitance in the tank circuit

26. - G7C05

Which of the following is an advantage of a transceiver controlled by a direct digital synthesizer (DDS)?

Select	Answer
A	Relatively high power output
B	Variable frequency with the stability of a crystal oscillator
C	Relatively low power consumption
D	Wide tuning range and no need for band switching

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Excessive bandwidth
B	Insufficient bandwidth
C	Frequency drift
D	Insufficient audio

28. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

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

29. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	On and Off
B	Mark and Space
C	High and Low
D	Dot and Dash

30. - G9A13

What standing wave ratio will result when connecting a 50 ohm feed line to an antenna that has a purely resistive 300 ohm feed point impedance?

Select	Answer
A	You cannot determine SWR from impedance values
B	1.5:1
C	3:1
D	6:1

31. - G9B02

Which of the following is a common way to adjust the feed point impedance of a quarter wave ground plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Slope the radials downward
B	Slope the radials upward
C	Lengthen the radials
D	Shorten the radials

32. - G9C19

How does antenna gain stated in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	dBi gain figures are 2.15 dB lower then dBd gain figures
B	dBi gain figures are the reciprocal of dBd gain figures + 2.15 dB
C	dBi gain figures are the same as the square root of dBd gain figures multiplied by 2.15
D	dBi gain figures are 2.15 dB higher than dBd gain figures

33. - G9D06

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

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

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

35. - G0B02

What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?

Select	Answer
A	AWG number 16
B	AWG number 8
C	AWG number 20
D	AWG number 12

Figure G7-1