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. - G1A04

Which of the following amateur bands is restricted to communication on only specific channels, rather than frequency ranges?

Select	Answer
A	30 meters
B	12 meters
C	60 meters
D	11 meters

2. - G1B04

Which of the following must be true before amateur stations may provide communications to broadcasters for dissemination to the public?

Select	Answer
A	The communications must be approved by a local emergency preparedness official and conducted on officially designated frequencies
B	The communications must directly relate to the immediate safety of human life or protection of property and there must be no other means of communication reasonably available before or at the time of the event
C	The FCC must have declared a state of emergency
D	All of these choices are correct

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	2.8 kHz
B	5.6 kHz
C	1.8 kHz
D	3 kHz

4. - G1D01

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

Select	Answer
A	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
B	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
C	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
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. - G1E13

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

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

6. - G2A04

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

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

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	At any time when transmitting in an organized net
B	At any time during an actual emergency
C	Only on authorized HF frequencies
D	Only when transmitting in RACES

8. - G2C06

What does the term "zero beat" mean in CW operation?

Select	Answer
A	Matching your transmit frequency to the frequency of a received signal
B	Operating split to avoid interference on frequency
C	Sending without error
D	Matching the speed of the transmitting station

9. - G2D10

What is QRP operation?

Select	Answer
A	Remote piloted model control
B	Transmission using Quick Response Protocol
C	Traffic relay procedure net operation
D	Low power transmit operation

10. - G2E05

What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?

Select	Answer
A	SSB
B	USB
C	DSB
D	LSB

11. - G3A12

What does the K-index indicate?

Select	Answer
A	The solar radio flux at Boulder, Colorado
B	The short term stability of the Earth's magnetic field
C	The relative position of sunspots on the surface of the Sun
D	The stability of the Sun's magnetic field

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Longest Universal Function for communications between two points
B	The Lowest Usable Frequency for communications between two points
C	The Longest Universal Function during a 24 hour period
D	The Lowest 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 is the densest ionospheric layer
B	Because it is the highest ionospheric region
C	All of these choices are correct
D	Because it does not absorb radio waves as much as other ionospheric regions

14. - G4A05

What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

Select	Answer
A	To reduce distortion due to excessive drive
B	To reduce harmonic radiation
C	To increase overall efficiency
D	To balance the transmitter audio frequency response

15. - G4B13

What is a use for an antenna analyzer other than measuring the SWR of an antenna system?

Select	Answer
A	Measuring the turns ratio of a power transformer
B	Determining the impedance of an unknown or unmarked coaxial cable
C	Determining the gain of a directional antenna
D	Measuring the front to back ratio of an antenna

16. - G4C12

Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?

Select	Answer
A	The DSP filter is much more effective at VHF frequencies
B	Mixing products are greatly reduced
C	A wide range of filter bandwidths and shapes can be created
D	Fewer digital components are required

17. - G4D02

Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

Select	Answer
A	It increases average power
B	It reduces harmonic distortion
C	It reduces intermodulation distortion
D	It increases peak power

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 increase the "Q" of the antenna
C	To narrow the operating bandwidth of the antenna
D	To reduce the chance of damage if the antenna should strike an object

19. - G5A08

Why is impedance matching important?

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

20. - G5B12

What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?

Select	Answer
A	692 volts
B	346 volts
C	245 volts
D	173 volts

21. - G5C07

What is the turns ratio of a transformer used to match an audio amplifier having 600 ohm output impedance to a speaker having 4 ohm impedance?

Select	Answer
A	12.2 to 1
B	150 to 1
C	300 to 1
D	24.4 to 1

22. - G6A14

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

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

23. - G6B09

Which of the following is a characteristic of a liquid crystal display?

Select	Answer
A	It has a wide viewing angle
B	It offers a wide dynamic range
C	It requires ambient or back lighting
D	All of these choices are correct

24. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 1
B	Symbol 4
C	Symbol 5
D	Symbol 2

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	An amplifier and a divider
C	A frequency multiplier and a mixer
D	A circulator and a filter operating in a feed-forward loop

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	Balanced modulator
B	Detector
C	IF amplifier
D	Mixer

27. - G8A05

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

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

28. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	60 kHz
B	416.7 Hz
C	101.75 Hz
D	5 kHz

29. - G8C10

How does forward error correction (FEC) allow the receiver to correct errors in received data packets?

Select	Answer
A	By transmitting redundant information with the data
B	By using a parity bit with each character
C	By controlling transmitter output power for optimum signal strength
D	By using the varicode character set

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	1.25:1
B	2.5:1
C	2:1
D	You cannot determine SWR from impedance values

31. - G9B12

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

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

32. - G9C12

Which of the following is an advantage of using a gamma match for impedance matching of a Yagi antenna to 50 ohm coax feed line?

Select	Answer
A	It does not require that the elements be insulated from the boom
B	All of these choices are correct
C	It does not require any inductors or capacitors
D	It is useful for matching multiband antennas

33. - G9D09

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

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

34. - G0A10

What is one thing that can be done if evaluation shows that a neighbor might receive more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Take precautions to ensure that the antenna cannot be pointed in their direction
B	Change to a non-polarized antenna with higher gain
C	Post a warning sign that is clearly visible to the neighbor
D	Use an antenna with a higher front-to-back ratio

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

Figure G7-1