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. - G1A14

In what ITU region is operation in the 7.175 to 7.300 MHz band permitted for a control operator holding an FCC issued General Class license?

Select	Answer
A	Region 2
B	All three regions
C	Region 1
D	Region 3

2. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the Amateur Service?

Select	Answer
A	They may be used if they do not obscure the meaning of a message
B	Only "Q" signals are permitted
C	They are not permitted
D	Only "10 codes" are permitted

3. - G1C07

What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?

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

4. - G1D01

Who may receive credit for the elements represented by an expired amateur radio license?

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

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. - G2A05

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

Select	Answer
A	Double sideband
B	Single sideband
C	Frequency modulation
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	150 to 500 Hz
B	3 to 6 kHz
C	5 to 50 Hz
D	1 to 3 kHz

8. - G2C02

What should you do if a CW station sends "QRS"?

Select	Answer
A	Send slower
B	Change frequency
C	Repeat everything twice
D	Increase your power

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. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	850 Hz
B	170 Hz
C	425 Hz
D	85 Hz

11. - G3A06

What is a geomagnetic storm?

Select	Answer
A	Ripples in the ionosphere
B	A sudden drop in the solar flux index
C	A thunderstorm which affects radio propagation
D	A temporary disturbance in the Earth's magnetosphere

12. - G3B08

What does MUF stand for?

Select	Answer
A	The Minimum Usable Frequency for communications between two points
B	The Maximum Usable Frequency during a 24 hour period
C	The Maximum Usable Frequency for communications between two points
D	The Minimum Usable Frequency during a 24 hour period

13. - G3C03

Why is the F2 region mainly responsible for the longest distance radio wave propagation?

Select	Answer
A	Because it does not absorb radio waves as much as other ionospheric regions
B	All of these choices are correct
C	Because it is the highest ionospheric region
D	Because it is the densest ionospheric layer

14. - G4A14

What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?

Select	Answer
A	When using digital modes, too much ALC activity can cause the transmitter to overheat
B	Improper action of ALC distorts the signal and can cause spurious emissions
C	All of these choices are correct
D	ALC will invert the modulation of the AFSK mode

15. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	An external RF oscillator
B	The local oscillator of the transmitter
C	The attenuated RF output of the transmitter
D	The transmitter balanced mixer output

16. - G4C03

What sound is heard from an audio device or telephone if there is interference from a nearby single sideband phone transmitter?

Select	Answer
A	Distorted speech
B	A steady hum whenever the transmitter is on the air
C	On-and-off humming or clicking
D	Clearly audible speech

17. - G4D06

Where is an S meter found?

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

18. - G4E06

What is one disadvantage of using a shortened mobile antenna as opposed to a full size antenna?

Select	Answer
A	Harmonic radiation may increase
B	Operating bandwidth may be very limited
C	Short antennas can only receive circularly polarized signals
D	Short antennas are more likely to cause distortion of transmitted signals

19. - G5A08

Why is impedance matching important?

Select	Answer
A	So the load will draw minimum power from the source
B	So the source can deliver maximum power to the load
C	To ensure that there is less resistance than reactance in the circuit
D	To ensure that the resistance and reactance in the circuit are equal

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	20.5 percent
B	12.2 percent
C	10.9 percent
D	25.9 percent

21. - G5C18

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

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

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

Select	Answer
A	Tight tolerance
B	High capacitance for given volume
C	Comparatively low cost
D	High stability

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. - G7A06

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

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

25. - G7B13

What is the reason for neutralizing the final amplifier stage of a transmitter?

Select	Answer
A	To cut off the final amplifier during standby periods
B	To keep the carrier on frequency
C	To eliminate self-oscillations
D	To limit the modulation index

26. - G7C01

Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?

Select	Answer
A	RF amplifier
B	IF amplifier
C	Carrier oscillator
D	Filter

27. - G8A06

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

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

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	Intermediate interference
B	Quadrature noise
C	Image response
D	Mixer interference

29. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

Select	Answer
A	Packets will be routed incorrectly
B	The checksum overflows
C	Encoding reverts to the default character set
D	The connection is dropped

30. - G9A15

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	The higher the transmission line loss, the more accurate the SWR measurement will be
B	Transmission line loss does not affect the SWR measurement
C	The higher the transmission line loss, the more the SWR will read artificially high
D	The higher the transmission line loss, the more the SWR will read artificially low

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

32. - G9C03

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

Select	Answer
A	The driven element is the longest element
B	Low feed point impedance increases bandwidth
C	The director is normally the shortest element
D	The reflector is normally the shortest element

33. - G9D09

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

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

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

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