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. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	12 meters
B	20 meters
C	30 meters
D	160 meters

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 "10 codes" are permitted
C	They are not permitted
D	Only "Q" signals are permitted

3. - G1C11

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?

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

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	On any General or Technician Class band segment
B	Only on the Technician band segments until your license arrives in the mail
C	On any General or Technician Class band segment except 30-meters and 60-meters
D	Only the Technician band segments until your upgrade is posted in the FCC database

5. - G1E11

Which of the following is the FCC term for an unattended digital station that transfers messages to and from the Internet?

Select	Answer
A	Fail-safe digital station
B	Automatically controlled digital station
C	Robotically controlled station
D	Locally controlled station

6. - G2A03

Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?

Select	Answer
A	Double sideband
B	Vestigial sideband
C	Upper sideband
D	Lower 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. - G2C02

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

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

9. - G2D01

What is the Amateur Auxiliary to the FCC?

Select	Answer
A	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
B	Amateur volunteers who conduct amateur licensing examinations
C	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
D	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters

10. - G2E04

What segment of the 20-meter band is most often used for digital transmissions?

Select	Answer
A	14.275 - 14.350 MHz
B	14.150 - 14.225 MHz
C	14.000 - 14.050 MHz
D	14.070 - 14.100 MHz

11. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	At any point in the solar cycle
B	Only at the maximum point of the solar cycle
C	At the summer solstice
D	Only at the minimum point of the solar cycle

12. - G3B07

What does LUF stand for?

Select	Answer
A	The Lowest Usable Frequency for communications between two points
B	The Longest Universal Function 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. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E-region is not present
B	Energy is scattered into the skip zone through several different radio wave paths
C	Ground waves are absorbing much of the signal
D	The ionospheric layer involved is unstable

14. - G4A10

What is the purpose of an electronic keyer?

Select	Answer
A	Automatic transmit/receive switching
B	VOX operation
C	Automatic generation of strings of dots and dashes for CW operation
D	Computer interface for PSK and RTTY operation

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	Measuring the front to back ratio of an antenna
C	Determining the impedance of an unknown or unmarked coaxial cable
D	Determining the gain of a directional 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	Mixing products are greatly reduced
B	Fewer digital components are required
C	A wide range of filter bandwidths and shapes can be created
D	The DSP filter is much more effective at VHF frequencies

17. - G4D04

What does an S meter measure?

Select	Answer
A	Impedance
B	Transmitter power output
C	Conductance
D	Received signal strength

18. - G4E04

Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?

Select	Answer
A	The socket is not wired with an RF-shielded power cable
B	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
C	The socket's wiring may be inadequate for the current drawn by the transceiver
D	Drawing more than 50 watts from this socket could cause the engine to overheat

19. - G5A01

What is impedance?

Select	Answer
A	The force of repulsion between two similar electric fields
B	The inverse of resistance
C	The opposition to the flow of current in an AC circuit
D	The electric charge stored by a capacitor

20. - G5B14

What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50 ohm resistive load connected to the transmitter output?

Select	Answer
A	625 watts
B	2500 watts
C	5000 watts
D	8.75 watts

21. - G5C18

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

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

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor's inductance could make circuit performance unpredictable
B	The resistor could overheat
C	The resistor's internal capacitance would detune the circuit
D	The resistor's tolerance value would not be adequate for such a circuit

23. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Programmable Logic
B	MMIC
C	Analog
D	Digital

24. - G7A12

Which symbol in Figure G7-1 represents a multiple-winding transformer?

Select	Answer
A	Symbol 6
B	Symbol 1
C	Symbol 7
D	Symbol 4

25. - G7B03

Which of the following describes the function of a two input AND gate?

Select	Answer
A	Output is high only when both inputs are high
B	Output is low only when both inputs are high
C	Output is high when either or both inputs are low
D	Output is low when either or both inputs are high

26. - G7C08

What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?

Select	Answer
A	Discriminator
B	Product detector
C	Phase inverter
D	Mixer

27. - G8A07

Which of the following phone emissions uses the narrowest bandwidth?

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

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	Quadrature noise
B	Image response
C	Intermediate interference
D	Mixer interference

29. - G8C10

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

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

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Decibels per 100 feet
B	Decibels per 1000 feet
C	Ohms per 100 feet
D	Ohms per 1000 feet

31. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	32 feet
B	8 feet
C	16 feet
D	24 feet

32. - G9C06

What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

Select	Answer
A	The driven element must be fed with a balun transformer
B	The reflector element must be approximately 5 percent longer than the driven element
C	There must be an open circuit in the driven element at the point opposite the feed point
D	The reflector element must be approximately 5 percent shorter than the driven element

33. - G9D05

What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

Select	Answer
A	It allows quick selection of vertical or horizontal polarization
B	It narrows the main lobe in azimuth
C	It narrows the main lobe in elevation
D	It allows simultaneous vertical and horizontal polarization

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

35. - G0B14

Which of the following is covered by the National Electrical Code?

Select	Answer
A	Electrical safety inside the ham shack
B	Acceptable bandwidth limits
C	RF exposure limits of the human body
D	Acceptable modulation limits

Figure G7-1