Practice Exam

G0B01

1. Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

• A. All wires
• B. Only the hot wires
• C. Only the neutral wire
• D. Only the ground wire

G6A06

2. Why should wire-wound resistors not be used in RF circuits?

• A. The resistor's internal capacitance would detune the circuit
• B. The resistor's tolerance value would not be adequate
• C. The resistor could overheat
• D. The resistor's inductance could make circuit performance unpredictable

G4D08

3. What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?

• A. 7.178 MHz to 7.181 MHz
• B. 7.175 MHz to 7.178 MHz
• C. 7.178 MHz to 7.184 MHz
• D. 7.1765 MHz to 7.1795 MHz

G1C07

4. What must be done before using a new digital protocol on the air?

• A. Submit a rule-making proposal to the FCC describing the codes and methods of the technique
• B. Publicly document the technical characteristics of the protocol
• C. Type-certify equipment to FCC standards
• D. Obtain an experimental license from the FCC

G5B09

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

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

G5C03

6. What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

• A. 5.9 ohms
• B. 17 ohms
• C. 0.17 ohms
• D. 80 ohms

G2A01

7. Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

• A. Suppressed sideband
• B. Double sideband
• C. Lower sideband
• D. Upper sideband

G1D08

8. Which of the following criteria must be met for a non-US citizen to be an accredited Volunteer Examiner?

• A. The person's home citizenship must be in ITU region 2
• B. The person must hold an FCC granted amateur radio license of General class or above
• C. The person must be a resident of the US for a minimum of 5 years
• D. None of these choices is correct; a non-US citizen cannot be a Volunteer Examiner

G2E07

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

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

G2C04

10. What does the Q signal "QRL?" mean?

• A. "Will you keep the frequency clear?"
• B. "Are you busy?" or "Is this frequency in use?"
• C. "Are you operating full break-in?" or "Can you operate full break-in?"
• D. "Are you listening only for a specific station?"

G1A01

11. On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?

• A. 80 meters, 40 meters, 20 meters, and 15 meters
• B. 80 meters, 20 meters, 15 meters, and 10 meters
• C. 60 meters, 30 meters, 17 meters, and 12 meters
• D. 160 meters, 60 meters, 15 meters, and 12 meters

G9A07

12. What must be done to prevent standing waves on a feed line connected to an antenna?

• A. The antenna feed point impedance must be matched to the characteristic impedance of the feed line
• B. The feed line must be an odd number of electrical quarter wavelengths long
• C. The feed line must be an even number of physical half wavelengths long
• D. The antenna feed point must be at DC ground potential

G4E09

13. What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

• A. 0.5 VDC
• B. 0.2 VDC
• C. 1.38 VDC
• D. 0.02 VDC

G9C07

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

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

G1B04

15. Which of the following transmissions is permitted for all amateur stations?

• A. Occasional retransmission of weather and propagation forecast information from US government stations
• B. Automatic retransmission of other amateur signals by any amateur station
• C. Unidentified transmissions of less than 10 seconds duration for test purposes only
• D. Encrypted messages, if not intended to facilitate a criminal act

G3A05

16. What is the solar flux index?

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

G6B02

17. What is meant by the term MMIC?

• A. Metal Monolayer Integrated Circuit
• B. Monolithic Microwave Integrated Circuit
• C. Multi-Mode Integrated Circuit
• D. Mode Modulated Integrated Circuit

G9D06

18. Which of the following is an advantage of a log-periodic antenna?

• A. Higher gain per element than a Yagi antenna
• B. Polarization diversity
• C. Wide bandwidth
• D. Harmonic suppression

G8B07

19. 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. 60 kHz
• B. 101.75 Hz
• C. 416.7 Hz
• D. 5 kHz

G3C06

20. What is a characteristic of HF scatter?

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

G5A04

21. Which of the following is opposition to the flow of alternating current in a capacitor?

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

G7C13

22. What term specifies a filter's maximum ability to reject signals outside its passband?

• A. Notch depth
• B. Rolloff
• C. Insertion loss
• D. Ultimate rejection

G2D03

23. What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

• A. All these choices are correct
• B. Compare vertical and horizontal signal strengths on the input frequency
• C. Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
• D. Compare signal strengths between the input and output of the repeater

G9B02

24. Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

• A. Lengthen the radials beyond one wavelength
• B. Slope the radials downward
• C. Coil the radials
• D. Slope the radials upward

G4C01

25. Which of the following might be useful in reducing RF interference to audio frequency circuits?

• A. Bypass capacitor
• B. Forward-biased diode
• C. Reverse-biased diode
• D. Bypass inductor

G7B01

26. What is the purpose of neutralizing an amplifier?

• A. To eliminate self-oscillations
• B. To cut off the final amplifier during standby periods
• C. To keep the carrier on frequency
• D. To limit the modulation index

G1E10

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

G4B08

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

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

G4A11

29. Why should the ALC system be inactive when transmitting AFSK data signals?

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

G0A04

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

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

G2B07

31. Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

• A. Follow the voluntary band plan
• B. Listen on the frequency for at least two minutes to be sure it is clear
• C. All these choices are correct
• D. Identify your station by transmitting your call sign at least 3 times

G8A12

32. What is QPSK modulation?

• A. Modulation using quadra-pole sideband keying to generate spread spectrum signals
• B. Modulation in which digital data is transmitted using 0-, 90-, 180- and 270-degrees phase shift to represent pairs of bits
• C. Modulation using quasi-parallel to serial conversion to reduce bandwidth
• D. Modulation using Fast Fourier Transforms to generate frequencies at the first, second, third, and fourth harmonics of the carrier frequency to improve noise immunity

G8C16

33. Which of the following provide digital voice modes?

• A. Winlink, PACTOR II, and PACTOR III
• B. WSPR, MFSK16, and EasyPAL
• C. DMR, D-STAR, and SystemFusion
• D. FT8, FT4, and FST4

G7A05

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

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

G3B09

35. What is the approximate maximum distance along the Earth's surface normally covered in one hop using the F2 region?

• A. 12,000 miles
• B. 180 miles
• C. 2,500 miles
• D. 1,200 miles