US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Anonymous User

US Amateur Radio - General (Element 3, 2015-2019) Practice Test

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A01

On which of the following bands is a General Class license holder granted all amateur frequency privileges?

Select	Answer
A	160, 30, 17, 15, 12, and 10 meters
B	60, 20, 17, and 12 meters
C	160, 80, 40, and 10 meters
D	160, 60, 30, 17, 12, and 10 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 "Q" signals are permitted
C	They are not permitted
D	Only "10 codes" 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	1200 baud
B	300 baud
C	56 kilobaud
D	19.6 kilobaud

4. - G1D07

Volunteer Examiners are accredited by what organization?

Select	Answer
A	The Wireless Telecommunications Bureau
B	A Volunteer Examiner Coordinator
C	The Universal Licensing System
D	The Federal Communications Commission

5. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The control operator of the interrogating station must hold an Extra Class license
B	The interrogating transmission must be made by another automatically controlled station
C	No third party traffic maybe be transmitted
D	The station initiating the contact must be under local or remote control

6. - G2A10

Which of the following statements is true of voice VOX operation versus PTT operation?

Select	Answer
A	It provides more power output
B	The received signal is more natural sounding
C	It occupies less bandwidth
D	It allows "hands free" operation

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	An FCC rule that allows only digital contacts in that portion of the band
B	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
C	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
D	A portion of the band that has been voluntarily set aside for digital contacts only

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. - G2D06

How is a directional antenna pointed when making a "long-path" contact with another station?

Select	Answer
A	Toward the rising Sun
B	180 degrees from its short-path heading
C	Toward the north
D	Along the gray line

10. - G2E12

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is vertical, signal strength is intensity, time is horizontal
B	Frequency is vertical, signal strength is horizontal, time is intensity
C	Frequency is horizontal, signal strength is intensity, time is vertical
D	Frequency is horizontal, signal strength is vertical, time is intensity

11. - G3A07

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

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

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just above the critical frequency
B	Select a frequency just below the MUF
C	Select a frequency just above the LUF
D	Select a frequency just below the critical frequency

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The signal is heard on a frequency above the Maximum Usable Frequency
B	The signal is heard on a frequency below the Maximum Usable Frequency
C	The communication is during a sudden ionospheric disturbance
D	The communication is during a sunspot maximum

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

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

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. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 1.5 times
B	Approximately 4 times
C	Approximately 2 times
D	Approximately 8 times

18. - G4E02

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

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

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Admittance
B	Reluctance
C	Conductance
D	Reactance

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	8.75 watts
B	5000 watts
C	625 watts
D	2500 watts

21. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

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

22. - G6A09

Which of the following describes the construction of a MOSFET?

Select	Answer
A	The source is formed by depositing metal on silicon
B	The source is separated from the drain by a thin insulating layer
C	The gate is separated from the channel with a thin insulating layer
D	The gate is formed by a back-biased junction

23. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	Reverse Biased
B	At the Zener voltage
C	Forward Biased
D	Beyond cutoff

24. - G7A05

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

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

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	A circulator and a filter operating in a feed-forward loop
B	A filter and an amplifier operating in a feedback loop
C	An amplifier and a divider
D	A frequency multiplier and a mixer

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	Phase inverter
B	Mixer
C	Discriminator
D	Product detector

27. - G8A01

How is an FSK signal generated?

Select	Answer
A	By keying an FM transmitter with a sub-audible tone
B	By changing an oscillator's frequency directly with a digital control signal
C	By reconfiguring the CW keying input to act as a tone generator
D	By using a transceiver's computer data interface protocol to change frequencies

28. - G8B05

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

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

29. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	Clover
B	JT9 and JT65
C	FSK441 and Hellschreiber
D	RTTY

30. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

Select	Answer
A	50:1
B	1:5
C	2:1
D	5:1

31. - G9B10

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

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

32. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Closer element spacing
B	Loading coils in series with the element
C	Larger diameter elements
D	Tapered-diameter elements

33. - G9D05

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

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

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

35. - G0B04

Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

Select	Answer
A	Lack of nitrogen for adequate combustion
B	Danger of carbon monoxide poisoning
C	Lack of oxygen for adequate combustion
D	Danger of engine over torque