Practice Exam

G5C10

1. What is the inductance of three 10-millihenry inductors connected in parallel?

• A. 3.3 millihenries
• B. 3.3 henries
• C. 0.30 henries
• D. 30 millihenries

G2B01

2. Which of the following is true concerning access to frequencies?

• A. QSOs in progress have priority
• B. Contest operations should yield to non-contest use of frequencies
• C. Nets have priority
• D. Except during emergencies, no amateur station has priority access to any frequency

G0B05

3. Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

• A. Current flowing from one or more of the hot wires directly to ground
• B. Overvoltage on the hot wires
• C. Current flowing from one or more of the hot wires to the neutral wire
• D. All these choices are correct

G4A12

4. Which of the following is a common use of the dual-VFO feature on a transceiver?

• A. To permit full duplex operation -- that is, transmitting and receiving at the same time
• B. To improve frequency accuracy by allowing variable frequency output (VFO) operation
• C. To transmit on one frequency and listen on another
• D. To allow transmitting on two frequencies at once

G8B07

5. What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

• A. 5 kHz
• B. 416.7 Hz
• C. 60 kHz
• D. 101.75 Hz

G2C03

6. What does it mean when a CW operator sends "KN" at the end of a transmission?

• A. Listening only for a specific station or stations
• B. No US stations should call
• C. Closing station now
• D. Operating full break-in

G3A05

7. What is the solar flux index?

• A. Another name for the American sunspot number
• B. A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth
• C. A count of sunspots that is adjusted for solar emissions
• D. A measure of solar radiation with a wavelength of 10.7 centimeters

G9C07

8. What does "front-to-back ratio" mean in reference to a Yagi antenna?

• A. The ratio of forward gain to dipole gain
• B. The number of directors versus the number of reflectors
• C. The power radiated in the major lobe compared to that in the opposite direction
• D. The relative position of the driven element with respect to the reflectors and directors

G0A04

9. What does "time averaging" mean when evaluating RF radiation exposure?

• A. The average time it takes RF radiation to have any long-term effect on the body
• B. The average amount of power developed by the transmitter over a specific 24-hour period
• C. The total time of the exposure
• D. The total RF exposure averaged over a certain period

G8C07

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

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

G2D08

11. Why do many amateurs keep a station log?

• A. To help with a reply if the FCC requests information about your station
• B. The FCC requires a log of all international third-party traffic
• C. The log provides evidence of operation needed to renew a license without retest
• D. The FCC requires a log of all international contacts

G8A06

12. Which of the following is characteristic of QPSK31?

• A. Its encoding provides error correction
• B. It is sideband sensitive
• C. All these choices are correct
• D. Its bandwidth is approximately the same as BPSK31

G5B01

13. What dB change represents a factor of two increase or decrease in power?

• A. Approximately 9 dB
• B. Approximately 6 dB
• C. Approximately 3 dB
• D. Approximately 2 dB

G6A03

14. What is the approximate forward threshold voltage of a germanium diode?

• A. 0.7 volts
• B. 0.1 volt
• C. 1.0 volts
• D. 0.3 volts

G7C09

15. What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

• A. 45 degrees
• B. 90 degrees
• C. 180 degrees
• D. Zero

G3B12

16. Which of the following is typical of the lower HF frequencies during the summer?

• A. Poor propagation at any time of day
• B. High levels of atmospheric noise or static
• C. World-wide propagation during daylight hours
• D. Heavy distortion on signals due to photon absorption

G9D01

17. Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

• A. A vertical dipole placed at approximately 1/2 wavelength above the ground
• B. A vertical antenna placed between 1/4 and 1/2 wavelength above the ground
• C. A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
• D. A horizontal dipole placed at approximately 1/2 wavelength above the ground

G7B02

18. Which of these classes of amplifiers has the highest efficiency?

• A. Class C
• B. Class AB
• C. Class B
• D. Class A

G1D07

19. Volunteer Examiners are accredited by what organization?

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

G3C06

20. What is a characteristic of HF scatter?

• A. Phone signals have high intelligibility
• B. Scatter propagation occurs only at night
• C. There are very large, sudden swings in signal strength
• D. Signals have a fluttering sound

G6B04

21. What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

• A. 4 GHz
• B. 40 GHz
• C. 500 MHz
• D. 50 MHz

G7A10

22. Which symbol in figure G7-1 represents a Zener diode?

• A. Symbol 4
• B. Symbol 11
• C. Symbol 1
• D. Symbol 5

G1B03

23. Which of the following is a purpose of a beacon station as identified in the FCC rules?

• A. Automatic identification of repeaters
• B. Observation of propagation and reception
• C. All these choices are correct
• D. Transmission of bulletins of general interest to amateur radio licensees

G4D11

24. How close to the upper edge of a band's phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

• A. At least 1 kHz above the edge of the segment
• B. At least 1 kHz below the edge of the segment
• C. At least 3 kHz below the edge of the band
• D. At least 3 kHz above the edge of the band

G4C08

25. Which of the following would reduce RF interference caused by common-mode current on an audio cable?

• A. Ground the center conductor of the audio cable causing the interference
• B. Connect the center conductor to the shield of all cables to short circuit the RFI signal
• C. Place a ferrite choke on the cable
• D. Add an additional insulating jacket to the cable

G1C02

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

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

G9A04

27. What causes reflected power at an antenna's feed point?

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

G4B11

28. Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

• A. Receiver
• B. All these choices are correct
• C. Antenna and feed line
• D. Transmitter

G1E10

29. Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

• A. A system of automatic digital stations operates on those frequencies
• B. These frequencies are set aside for bulletins from the FCC
• C. These frequencies are set aside for emergency operations
• D. A system of propagation beacon stations operates on those frequencies

G2A08

30. What is the recommended way to break into a phone contact?

• A. Say "Breaker Breaker"
• B. Say "CQ" followed by the call sign of either station
• C. Say "QRZ" several times, followed by your call sign
• D. Say your call sign once

G9B04

31. What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

• A. It is a figure-eight at right angles to the antenna
• B. It is a figure-eight off both ends of the antenna
• C. It has a pair of lobes on one side of the antenna and a single lobe on the other side
• D. It is a circle (equal radiation in all directions)

G4E10

32. Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

• A. To prevent discharge of the battery through the panel during times of low or no illumination
• B. To prevent overload by regulating the charging voltage
• C. To prevent damage to the battery due to excessive voltage at high illumination levels
• D. To limit the current flowing from the panel to a safe value

G5A11

33. What letter is used to represent reactance?

• A. Y
• B. X
• C. Z
• D. B

G2E07

34. Which of the following is required when using FT8?

• A. A vertically polarized antenna
• B. Receiver attenuator set to -12 dB
• C. Computer time accurate to within approximately 1 second
• D. A special hardware modem

G1A06

35. 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