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. - G1A06

Which of the following frequencies is within the General Class portion of the 75-meter phone band?

Select	Answer
A	3900 kHz
B	1875 kHz
C	4005 kHz
D	3750 kHz

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	50 feet
B	300 feet
C	200 feet
D	100 feet

3. - G1C10

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

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

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	There are no requirements other than being able to show a copy of the expired license
B	They must have a letter from the FCC showing they once held an amateur or commercial license
C	The applicant must pass the current element 2 exam
D	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address

5. - G1E06

Which of the following applies in the event of interference between a coordinated repeater and an uncoordinated repeater?

Select	Answer
A	The frequency coordinator bears primary responsibility to resolve the interference
B	The licensee of the coordinated repeater has primary responsibility to resolve the interference
C	The licensee of the uncoordinated repeater has primary responsibility to resolve the interference
D	Both repeater licensees share equal responsibility to resolve the interference

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	A general call for any station
B	The caller is looking for any station outside their own country
C	A distress call
D	The caller is listening for a station in Germany

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

8. - G2C02

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

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

9. - G2D05

When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?

Select	Answer
A	Only when the foreign country has a formal third party agreement filed with the FCC
B	When the contact is with amateurs in any country as long as the communication is conducted in English
C	Only when the foreign country is a member of the International Amateur Radio Union
D	When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications

10. - G2E12

Which of the following describes a waterfall display?

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

11. - G3A10

What causes HF propagation conditions to vary periodically in a 28 day cycle?

Select	Answer
A	Cyclic variation in the Earth's radiation belts
B	The position of the Moon in its orbit
C	The Sun's rotation on its axis
D	Long term oscillations in the upper atmosphere

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

13. - G3C05

Why is long distance communication on the 40-meter, 60-meter, 80-meter and 160-meter bands more difficult during the day?

Select	Answer
A	The D layer absorbs signals at these frequencies during daylight hours
B	The E layer is unstable during daylight hours
C	The F layer absorbs signals at these frequencies during daylight hours
D	The F layer is unstable during daylight hours

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To tune in stations that are slightly off frequency without changing your transmit frequency
B	To permit listening on a different frequency from that on which you are transmitting
C	To avoid interference from stations very close to the receive frequency
D	To change frequency rapidly

15. - G4B13

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

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

16. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Arcing at a poor electrical connection
B	Using a balun to feed an unbalanced antenna
C	Lack of rectification of the transmitter's signal in power conductors
D	Not using a balun or line isolator to feed balanced antennas

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	Drawing more than 50 watts from this socket could cause the engine to overheat
C	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
D	The socket's wiring may be inadequate for the current drawn by the transceiver

19. - G5A03

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

Select	Answer
A	Reactance
B	Admittance
C	Reluctance
D	Conductance

20. - G5B10

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

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

21. - G5C12

What is the capacitance of a 20 microfarad capacitor connected in series with a 50 microfarad capacitor?

Select	Answer
A	1000 microfarads
B	70 microfarads
C	14.3 microfarads
D	0.07 microfarads

22. - G6A04

When is it acceptable to recharge a carbon-zinc primary cell?

Select	Answer
A	Never
B	When a constant current charger is used
C	As long as the voltage has not been allowed to drop below 1.0 volt
D	When the cell is kept warm during the recharging period

23. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Monolithic Microwave Integrated Circuit
B	Mode Modulated Integrated Circuit
C	Multi Megabyte Integrated Circuit
D	Military Manufactured Integrated Circuit

24. - G7A12

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

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

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	A Class C high efficiency amplifier
B	An amplifier used as a frequency multiplier
C	An amplifier in which the output preserves the input waveform
D	Any RF power amplifier used in conjunction with an amateur transceiver

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	Mixer
B	Phase inverter
C	Product detector
D	Discriminator

27. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Insufficient audio
B	Frequency drift
C	Excessive bandwidth
D	Insufficient bandwidth

28. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	8 kHz
B	5 kHz
C	16 kHz
D	3 kHz

29. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A code using SELCAL and LISTEN
B	A 7-bit code with start, stop and parity bits
C	A code using error detection and correction
D	A 5-bit code with additional start and stop bits

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

31. - G9B07

How does the feed point impedance of a 1/2 wave dipole antenna change as the antenna is lowered below 1/4 wave above ground?

Select	Answer
A	It steadily decreases
B	It steadily increases
C	It is unaffected by the height above ground
D	It peaks at about 1/8 wavelength above ground

32. - G9C18

What happens when the feed point of a quad antenna of any shape is moved from the midpoint of the top or bottom to the midpoint of either side?

Select	Answer
A	The polarization of the radiated signal changes from horizontal to vertical
B	The radiated signal becomes circularly polarized
C	The polarization of the radiated signal changes from vertical to horizontal
D	There is no change in polarization

33. - G9D04

What is the primary purpose of antenna traps?

Select	Answer
A	To prevent out of band operation
B	To provide balanced feed point impedance
C	To permit multiband operation
D	To notch spurious frequencies

34. - G0A03

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

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

35. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To shut down the unit if it becomes too hot
B	To ensure that dangerous voltages are removed if the cabinet is opened
C	To shut off the power supply if too much voltage is produced
D	To prevent unauthorized changes to the circuit that would void the manufacturer's warranty

Figure G7-1