Practice Exam

G5C01

1. What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

• A. Mutual capacitance
• B. Capacitive coupling
• C. Displacement current coupling
• D. Mutual inductance

G1A06

2. Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?

• A. Amateur stations must not cause harmful interference to primary users and must accept interference from primary users
• B. Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
• C. Amateur stations may use the band only during emergencies
• D. Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station

G9A01

3. Which of the following factors determine the characteristic impedance of a parallel conductor feed line?

• A. The radius of the conductors and the frequency of the signal
• B. The frequency of the signal and the length of the line
• C. The distance between the centers of the conductors and the radius of the conductors
• D. The distance between the centers of the conductors and the length of the line

G0B09

4. Which of the following is true of an emergency generator installation?

• A. The generator should be operated in a well-ventilated area
• B. All these choices are correct
• C. Fuel should be stored near the generator for rapid refueling in case of an emergency
• D. The generator must be insulated from ground

G2A09

5. Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

• A. Because it is fully compatible with an AM detector
• B. Lower sideband is the only sideband legal on these frequency bands
• C. It is commonly accepted amateur practice
• D. Lower sideband is more efficient than upper sideband at these frequencies

G2C01

6. Which of the following describes full break-in CW operation (QSK)?

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

G3C04

7. What does the term "critical angle" mean, as applied to radio wave propagation?

• A. The lowest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
• B. The long path azimuth of a distant station
• C. The highest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
• D. The short path azimuth of a distant station

G3A08

8. How can a geomagnetic storm affect HF propagation?

• A. Degrade ground wave propagation
• B. Degrade high-latitude HF propagation
• C. Improve ground wave propagation
• D. Improve high-latitude HF propagation

G1E05

9. What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

• A. They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief
• B. They must relate to emergencies or disaster relief
• C. The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
• D. They must be for other licensed amateurs

G5B09

10. What is the RMS voltage of a sine wave with a value of 17 volts peak?

• A. 34 volts
• B. 12 volts
• C. 24 volts
• D. 8.5 volts

G2B08

11. What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

• A. Only digital contacts
• B. Only SSTV contacts
• C. Only contacts with other stations within the 48 contiguous states
• D. Only contacts with stations not within the 48 contiguous states

G4C07

12. Why should soldered joints not be used in lightning protection ground connections?

• A. Solder has too high a dielectric constant to provide adequate lightning protection
• B. A soldered joint will likely be destroyed by the heat of a lightning strike
• C. Solder flux will prevent a low conductivity connection
• D. All these choices are correct

G9B08

13. 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?

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

G9D04

14. What is the primary function of antenna traps?

• A. To prevent out-of-band operation
• B. To enable multiband operation
• C. To notch spurious frequencies
• D. To provide balanced feed point impedance

G6B06

15. What kind of device is an integrated circuit operational amplifier?

• A. Digital
• B. Analog
• C. Programmable Logic
• D. MMIC

G6A09

16. Which of the following describes MOSFET construction?

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

G2D05

17. Which of the following indicates that you are looking for an HF contact with any station?

• A. Transmit an unmodulated carried for approximately 10 seconds, followed by "this is" and your call sign, and pause to listen -- repeat as necessary
• B. Repeat "CQ" a few times, followed by "this is," then your call sign a few times, then pause to listen, repeat as necessary
• C. Say "QTC" followed by "this is" and your call sign -- if no answer, change frequency and repeat
• D. Sign your call sign once, followed by the words "listening for a call" -- if no answer, change frequency and repeat

G7A06

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

• A. 360 degrees
• B. 90 degrees
• C. 270 degrees
• D. 180 degrees

G9C01

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

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

G1B11

20. Who or what determines "good engineering and good amateur practice," as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

• A. The control operator
• B. The FCC
• C. The IEEE
• D. The ITU

G8A09

21. What type of modulation is used by FT8?

• A. Vestigial sideband
• B. 8-bit direct sequence spread spectrum
• C. Amplitude compressed AM
• D. 8-tone frequency shift keying

G4D05

22. How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

• A. It is 10 times less powerful
• B. It is 20 times less powerful
• C. It is 20 times more powerful
• D. It is 100 times more powerful

G5A03

23. Which of the following is opposition to the flow of alternating current in an inductor?

• A. Reluctance
• B. Reactance
• C. Admittance
• D. Conductance

G1D12

24. When operating a station in South America by remote control over the internet from the US, what regulations apply?

• A. Those of both the remote station's country and the FCC
• B. Only those of the FCC
• C. Only those of the remote station's country
• D. Those of the remote station's country and the FCC's third-party regulations

G3B06

25. What usually happens to radio waves with frequencies below the LUF?

• A. They are refracted and trapped in the ionosphere to circle Earth
• B. They are attenuated before reaching the destination
• C. They pass through the ionosphere
• D. They are refracted back to Earth

G7C02

26. What output is produced by a balanced modulator?

• A. Audio extracted from the modulation signal
• B. Double-sideband modulated RF
• C. Audio with equalized frequency response
• D. Frequency modulated RF

G8B05

27. Which intermodulation products are closest to the original signal frequencies?

• A. Intercept point
• B. Even-order
• C. Second harmonics
• D. Odd-order

G4B08

28. What transmitter performance parameter does a two-tone test analyze?

• A. Linearity
• B. Percentage of suppression of the carrier and undesired sideband for SSB
• C. Percentage of carrier phase shift
• D. Percentage of frequency modulation

G0A12

29. What stations are subject to the FCC rules on RF exposure?

• A. Only stations with antennas lower than one wavelength above the ground
• B. All commercial stations; amateur radio stations are exempt
• C. All stations with a time-averaged transmission of more than one milliwatt
• D. Only stations transmitting more than 500 watts PEP

G4A10

30. What is the function of an electronic keyer?

• A. Automatic generation of dots and dashes for CW operation
• B. To allow time for switching the antenna from the receiver to the transmitter
• C. Automatic transmit/receive switching
• D. Computer interface for PSK and RTTY operation

G2E10

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

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

G7B09

32. What determines the frequency of an LC oscillator?

• A. The number of stages in the counter
• B. The inductance and capacitance in the tank circuit
• C. The time delay of the lag circuit
• D. The number of stages in the divider

G1C02

33. What is the maximum transmitter power an amateur station may use on the 12-meter band?

• A. 200 watts PEP output
• B. 50 watts PEP output
• C. 1500 watts PEP output
• D. An effective radiated power equivalent to 100 watts from a half-wave dipole

G4E11

34. What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

• A. Ensure the battery is placed terminals-up
• B. A series resistor must be in place
• C. Ground the solar panel outer metal framework
• D. The solar panel must have a charge controller

G8C07

35. Which of the following narrow-band digital modes can receive signals with very low signal-to-noise ratios?

• A. AMTOR
• B. FT8
• C. MFSK32
• D. MSK144