Practice Exam

G3C09

1. What type of propagation allows signals to be heard in the transmitting station's skip zone?

• A. Short-path
• B. Faraday rotation
• C. Scatter
• D. Chordal hop

G6A12

2. What is the primary purpose of a screen grid in a vacuum tube?

• A. To increase efficiency
• B. To increase the control grid resistance
• C. To reduce grid-to-plate capacitance
• D. To decrease plate resistance

G0A11

3. What precaution should be taken if you install an indoor transmitting antenna?

• A. Locate the antenna close to your operating position to minimize feed-line radiation
• B. Make sure the antenna is properly shielded
• C. Make sure that MPE limits are not exceeded in occupied areas
• D. Position the antenna along the edge of a wall to reduce parasitic radiation

G8A05

4. What type of modulation varies the instantaneous power level of the RF signal?

• A. Power modulation
• B. Amplitude modulation
• C. Phase modulation
• D. Frequency modulation

G7A09

5. Which symbol in figure G7-1 represents a field effect transistor?

• A. Symbol 2
• B. Symbol 4
• C. Symbol 5
• D. Symbol 1

G5C14

6. Which of the following components should be added to an inductor to increase the inductance?

• A. An inductor in series
• B. A capacitor in series
• C. An inductor in parallel
• D. A capacitor in parallel

G4E03

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

• A. To the battery using heavy-gauge wire
• B. To the alternator or generator using insulated heavy duty balanced transmission line
• C. To the alternator or generator using heavy-gauge wire
• D. To the battery using insulated heavy duty balanced transmission line

G9D07

8. Which of the following describes a log-periodic antenna?

• A. Impedance varies periodically as a function of frequency
• B. Gain varies logarithmically as a function of frequency
• C. Element length and spacing vary logarithmically along the boom
• D. SWR varies periodically as a function of boom length

G5A07

9. What is the term for the inverse of impedance?

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

G3A13

10. What does the A-index measure?

• A. The amount of polarization of the Sun's electric field
• B. The long-term stability of Earth's geomagnetic field
• C. The solar radio flux at Boulder, Colorado
• D. The relative position of sunspots on the surface of the Sun

G1A05

11. On which of the following frequencies are General class licensees prohibited from operating as control operator?

• A. All of the above
• B. 21.275 MHz to 21.300 MHz
• C. 28.000 MHz to 28.025 MHz
• D. 7.125 MHz to 7.175 MHz

G7B10

12. Which of the following describes a linear amplifier?

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

G2B10

13. Which of the following is good amateur practice for net management?

• A. Always use multiple sets of phonetics during check-in
• B. Transmit the full net roster at the beginning of every session
• C. All these choices are correct
• D. Have a backup frequency in case of interference or poor conditions

G4C09

14. How can the effects of ground loops be minimized?

• A. Connect all ground conductors in series
• B. Bond equipment enclosures together
• C. Avoid using lock washers and star washers when making ground connections
• D. Connect the AC neutral conductor to the ground wire

G2D01

15. What is the Volunteer Monitor Program?

• A. Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency
• B. Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
• C. Amateur volunteers who conduct amateur licensing examinations
• D. Amateur volunteers who conduct frequency coordination for amateur VHF repeaters

G2E02

16. What is VARA?

• A. A radio direction finding system used on VHF and UHF
• B. A DX spotting system using a network of software defined radios
• C. A low signal-to-noise digital mode used for EME (moonbounce)
• D. A digital protocol used with Winlink

G9C11

17. What is a beta or hairpin match?

• A. A 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching
• B. A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna
• C. A shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching
• D. A series capacitor selected to cancel the inductive reactance of a folded dipole antenna

G1C05

18. What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

• A. 100 watts PEP output
• B. 1000 watts PEP output
• C. 1500 watts PEP output
• D. 2000 watts PEP output

G4A04

19. What is the effect on plate current of the correct setting of a vacuum-tube RF power amplifier's TUNE control?

• A. A pronounced dip
• B. No change will be observed
• C. A slow, rhythmic oscillation
• D. A pronounced peak

G4D08

20. 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. 7.178 MHz to 7.184 MHz
• C. 7.1765 MHz to 7.1795 MHz
• D. 7.175 MHz to 7.178 MHz

G1E02

21. When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

• A. Under no circumstances
• B. Only if the 10-meter repeater control operator holds at least a General class license
• C. Only during an FCC-declared general state of communications emergency
• D. Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission

G0B10

22. Which of the following is a danger from lead-tin solder?

• A. Tin in the solder can "cold flow," causing shorts in the circuit
• B. RF energy can convert the lead into a poisonous gas
• C. Lead can contaminate food if hands are not washed carefully after handling the solder
• D. High voltages can cause lead-tin solder to disintegrate suddenly

G8B02

23. What is the term for interference from a signal at twice the IF frequency from the desired signal?

• A. Mixer interference
• B. Quadrature response
• C. Intermediate interference
• D. Image response

G6B03

24. Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

• A. Better suited for RF amplification
• B. Low power consumption
• C. Better suited for power supply regulation
• D. High power handling capability

G5B04

25. How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

• A. 24 watts
• B. 6 watts
• C. 2.4 watts
• D. 60 watts

G3B11

26. What happens to HF propagation when the LUF exceeds the MUF?

• A. Propagation via ordinary skywave communications is not possible over that path
• B. Propagation over the path on all HF frequencies is enhanced
• C. Double-hop propagation along the path is more common
• D. HF communications over the path are enhanced

G9A11

27. What is the effect of transmission line loss on SWR measured at the input to the line?

• A. Transmission line loss does not affect the SWR measurement
• B. Higher loss increases SWR measured at the input to the line
• C. Higher loss reduces SWR measured at the input to the line
• D. Higher loss increases the accuracy of SWR measured at the input to the line

G9B06

28. Where should the radial wires of a ground-mounted vertical antenna system be placed?

• A. On the surface or buried a few inches below the ground
• B. Parallel to the antenna element
• C. At the center of the antenna
• D. As high as possible above the ground

G7C08

29. Which parameter affects receiver sensitivity?

• A. All these choices are correct
• B. Demodulator stage bandwidth
• C. Input amplifier noise figure
• D. Input amplifier gain

G1B10

30. What is the power limit for beacon stations?

• A. 20 watts PEP output
• B. 10 watts PEP output
• C. 100 watts PEP output
• D. 200 watts PEP output

G2C05

31. What is the best speed to use when answering a CQ in Morse code?

• A. The fastest speed at which you are comfortable copying, but no slower than the CQ
• B. At the standard calling speed of 5 wpm
• C. At the standard calling speed of 10 wpm
• D. The fastest speed at which you are comfortable copying, but no faster than the CQ

G1D03

32. On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

• A. Only on the Technician band segments until you have a receipt for the FCC application fee payment
• B. On any General or Technician class band segment except 30 meters and 60 meters
• C. Only the Technician band segments until your upgrade is posted in the FCC database
• D. On any General or Technician class band segment

G8C10

33. How does forward error correction (FEC) allow the receiver to correct data errors?

• A. By transmitting redundant information with the data
• B. By using a parity bit with each character
• C. By using the Varicode character set
• D. By controlling transmitter output power for optimum signal strength

G2A02

34. Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?

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

G4B05

35. Why do voltmeters have high input impedance?

• A. It improves the resolution of the readings
• B. It decreases the loading on circuits being measured
• C. It allows for higher voltages to be safely measured
• D. It improves the frequency response