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. - G1A03

On which of the following bands is image transmission prohibited?

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

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis
B	Only when there is no other means of communications readily available
C	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
D	Never

3. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

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

4. - G1D02

What license examinations may you administer when you are an accredited VE holding a General Class operator license?

Select	Answer
A	General and Technician
B	Extra, General and Technician
C	Technician only
D	General only

5. - G1E01

Which of the following would disqualify a third party from participating in stating a message over an amateur station?

Select	Answer
A	The third party is a licensed amateur
B	The third party's amateur license has been revoked and not reinstated
C	The third party is speaking in a language other than English
D	The third party is not a U.S. citizen

6. - G2A10

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

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

7. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Immediately cease all transmissions
B	Acknowledge the station in distress and determine what assistance may be needed
C	Continue your communication because you were on the frequency first
D	Change to a different frequency

8. - G2C01

Which of the following describes full break-in telegraphy (QSK)?

Select	Answer
A	Automatic keyers are used to send Morse code instead of hand keys
B	An operator must activate a manual send/receive switch before and after every transmission
C	Breaking stations send the Morse code prosign BK
D	Transmitting stations can receive between code characters and elements

9. - G2D03

What skills learned during hidden transmitter hunts are of help to the Amateur Auxiliary?

Select	Answer
A	Direction finding used to locate stations violating FCC Rules
B	Identification of out of band operation
C	Identification of different call signs
D	Hunters have an opportunity to transmit on non-amateur frequencies

10. - G2E10

Which of the following is a way to establish contact with a digital messaging system gateway station?

Select	Answer
A	Transmit a connect message on the station's published frequency
B	Send QRL in Morse code
C	Respond when the station broadcasts its SSID
D	Send an email to the system control operator

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	At the summer solstice
C	Only at the minimum point of the solar cycle
D	Only at the maximum 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. - G3C06

What is a characteristic of HF scatter signals?

Select	Answer
A	They have very large swings in signal strength
B	They have high intelligibility
C	They have a wavering sound
D	All of these choices are correct

14. - G4A10

What is the purpose of an electronic keyer?

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

15. - G4B02

Which of the following is an advantage of an oscilloscope versus a digital voltmeter?

Select	Answer
A	An oscilloscope uses less power
B	Complex impedances can be easily measured
C	Complex waveforms can be measured
D	Input impedance is much lower

16. - G4C10

What could be a symptom of a ground loop somewhere in your station?

Select	Answer
A	You receive reports of harmonic interference from your station
B	An item of station equipment starts to draw excessive amounts of current
C	You receive reports of "hum" on your station's transmitted signal
D	The SWR reading for one or more antennas is suddenly very high

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 3 kHz below the edge of the band
C	At least 3 kHz above the edge of the band
D	At least 1 kHz below the edge of the segment

18. - G4E03

Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?

Select	Answer
A	To the alternator or generator using heavy gauge wire
B	To the battery using resistor wire
C	To the battery using heavy gauge wire
D	To the alternator or generator using resistor wire

19. - G5A02

What is reactance?

Select	Answer
A	A large spark produced at switch contacts when an inductor is de-energized
B	Opposition to the flow of alternating current caused by capacitance or inductance
C	Opposition to the flow of direct current caused by resistance
D	A property of ideal resistors in AC circuits

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	8.75 watts
D	5000 watts

21. - G5C16

Why is the conductor of the primary winding of many voltage step up transformers larger in diameter than the conductor of the secondary winding?

Select	Answer
A	To insure that the volume of the primary winding is equal to the volume of the secondary winding
B	To prevent parasitic oscillations due to resistive losses in the primary
C	To accommodate the higher current of the primary
D	To improve the coupling between the primary and secondary

22. - G6A10

Which element of a triode vacuum tube is used to regulate the flow of electrons between cathode and plate?

Select	Answer
A	Control grid
B	Trigger electrode
C	Heater
D	Screen Grid

23. - G6B11

What is a microprocessor?

Select	Answer
A	A low voltage amplifier used in a microwave transmitter modulator stage
B	A low power analog signal processor used as a microwave detector
C	A microwave detector, amplifier, and local oscillator on a single integrated circuit
D	A computer on a single integrated circuit

24. - G7A08

Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	All of these choices are correct
B	High frequency operation allows the use of smaller components
C	Faster switching time makes higher output voltage possible
D	Fewer circuit components are required

25. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Divide the RF output power by the DC input power
B	Divide the DC input power by the DC output power
C	Add the RF input power to the DC output power
D	Multiply the RF input power by the reciprocal of the RF 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	RF oscillator
C	Product detector
D	Balanced modulator

27. - G8A01

How is an FSK signal generated?

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

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	5 kHz
C	416.7 Hz
D	101.75 Hz

29. - G8C02

How many data bits are sent in a single PSK31 character?

Select	Answer
A	The number varies
B	5
C	7
D	8

30. - G9A04

What might cause reflected power at the point where a feed line connects to an antenna?

Select	Answer
A	A difference between feed line impedance and antenna feed point impedance
B	Feeding the antenna with unbalanced feed line
C	Using more transmitter power than the antenna can handle
D	Operating an antenna at its resonant frequency

31. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It is unaffected by the location of the feed point
B	It steadily decreases
C	It peaks at about 1/8 wavelength from the end
D	It steadily increases

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

33. - G9D10

Which of the following describes a Beverage antenna?

Select	Answer
A	A broad-band mobile antenna
B	A helical antenna for space reception
C	A very long and low directional receiving antenna
D	A vertical antenna

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By measurement of field strength using calibrated equipment
B	All of these choices are correct
C	By calculation based on computer modeling
D	By calculation based on FCC OET Bulletin 65

35. - G0B01

Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?

Select	Answer
A	All wires
B	Only the neutral wire
C	Only the ground wire
D	Only the two wires carrying voltage