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. - G1A05

Which of the following frequencies is in the General Class portion of the 40-meter band?

Select	Answer
A	40.500 MHz
B	7.500 MHz
C	40.200 MHz
D	7.250 MHz

2. - G1B12

Who or what determines "good engineering and good amateur practice" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The Control Operator
B	The ITU
C	The IEEE
D	The FCC

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	365 days
B	180 days
C	For as long as your current license is valid
D	30 days

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

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

Select	Answer
A	Double sideband
B	Lower sideband
C	Vestigial sideband
D	Upper sideband

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

8. - G2C10

What does the Q signal "QRN" mean?

Select	Answer
A	Zero beat my signal
B	Stop sending
C	I am troubled by static
D	Send more slowly

9. - G2D07

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of all third party traffic
B	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
C	You must keep a record of the manufacturer of your equipment and the antenna used
D	You must keep a record of the date, time, frequency, power level and stations worked

10. - G2E08

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

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

11. - G3A08

Which of the following effects can a geomagnetic storm have on radio propagation?

Select	Answer
A	Improved ground-wave propagation
B	Improved high-latitude HF propagation
C	Degraded high-latitude HF propagation
D	Improved chances of UHF ducting

12. - G3B01

How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?

Select	Answer
A	Periodic fading approximately every 10 seconds
B	A well-defined echo might be heard
C	Signal strength increased by 3 dB
D	The signal might be cancelled causing severe attenuation

13. - G3C13

What is Near Vertical Incidence Sky-wave (NVIS) propagation?

Select	Answer
A	Short distance MF or HF propagation using high elevation angles
B	Double hop propagation near the LUF
C	Propagation near the MUF
D	Long path HF propagation at sunrise and sunset

14. - G4A03

What is normally meant by operating a transceiver in "split" mode?

Select	Answer
A	The radio is operating at half power
B	The transceiver is operating from an external power source
C	The transmitter is emitting an SSB signal, as opposed to DSB operation
D	The transceiver is set to different transmit and receive frequencies

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Transmitter
B	Receiver
C	Antenna and feed line
D	All of these choices are correct

16. - G4C05

What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?

Select	Answer
A	Insulated wire has been used for the ground wire
B	Flat braid rather than round wire has been used for the ground wire
C	The ground rod is resonant
D	The ground wire has high impedance on that frequency

17. - G4D11

How close to the upper edge of the 20-meter General Class band should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	Your displayed carrier frequency may be set at the edge of the band
B	At least 1 kHz below the edge of the segment
C	At least 3 kHz below the edge of the band
D	At least 3 kHz above the edge of the band

18. - G4E09

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

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

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. - 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 peak-to-peak value
C	The RMS value
D	The reciprocal of the RMS value

21. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

Select	Answer
A	An inductor in parallel
B	A capacitor in series
C	An inductor in series
D	A resistor in parallel

22. - G6A13

Why is the polarity of applied voltages important for polarized capacitors?

Select	Answer
A	All of these choices are correct
B	The capacitor could overheat and explode
C	Reverse voltages can destroy the dielectric layer of an electrolytic capacitor
D	Incorrect polarity can cause the capacitor to short-circuit

23. - G6B03

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

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

24. - G7A04

What is the peak-inverse-voltage across the rectifier in a half-wave power supply?

Select	Answer
A	One-half the normal peak output voltage of the power supply
B	One-half the normal output voltage of the power supply
C	Equal to the normal output voltage of the power supply
D	Two times the normal peak output voltage of the power supply

25. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Multiply the RF input power by the reciprocal of the RF output power
B	Divide the RF output power by the DC input power
C	Add the RF input power to the DC output power
D	Divide the DC input power by the DC output power

26. - G7C04

What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?

Select	Answer
A	IF filter
B	Balanced modulator
C	Product detector
D	RF oscillator

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Available transmitter power can be used more effectively
B	Audio fidelity is improved
C	Simpler receiving equipment can be used
D	Greater modulation percentage is obtainable with lower distortion

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	31.5 Hz
B	500 Hz
C	1800 Hz
D	2300 Hz

29. - G8C11

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

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

30. - G9A03

What is the characteristic impedance of flat ribbon TV type twinlead?

Select	Answer
A	50 ohms
B	75 ohms
C	100 ohms
D	300 ohms

31. - G9B03

What happens to the feed point impedance of a ground plane antenna when its radials are changed from horizontal to sloping downward?

Select	Answer
A	It increases
B	It decreases
C	It reaches a maximum at an angle of 45 degrees
D	It stays the same

32. - G9C14

How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?

Select	Answer
A	About 1.5 times as much
B	About 2/3 as much
C	About twice as much
D	About the same

33. - G9D09

Which of the following is an application for a Beverage antenna?

Select	Answer
A	Portable direction finding at higher HF frequencies
B	Directional receiving for low HF bands
C	Portable direction finding at lower HF frequencies
D	Directional transmitting for low HF bands

34. - G0A02

Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?

Select	Answer
A	Its frequency
B	Its power density
C	Its duty cycle
D	All of these choices are correct

35. - G0B09

Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?

Select	Answer
A	Solder has too high a dielectric constant to provide adequate lightning protection
B	Solder flux will prevent a low conductivity connection
C	The resistance of solder is too high
D	A soldered joint will likely be destroyed by the heat of a lightning strike