Practice Exam

Element 3: General

G7C11

1. What is meant by the term "software-defined radio" (SDR)?

G9C11

2. Which HF antenna would be the best to use for minimizing interference?

G8B09

3. Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

G9A01

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

G0B08

5. What should be done by any person preparing to climb a tower that supports electrically powered devices?

G2D03

6. What skills learned during hidden transmitter hunts are of help to the Volunteer Monitoring Program?

G4C09

7. How can a ground loop be avoided?

G7B02

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

G1E04

9. Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?

G3C05

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

G6B12

11. Which of these connector types is commonly used for audio signals in Amateur Radio stations?

G6A03

12. What is the approximate junction threshold voltage of a germanium diode?

G8C12

13. Which type of code is used for sending characters in a PSK31 signal?

G4D03

14. Which of the following can be the result of an incorrectly adjusted speech processor?

G9D05

15. What is an advantage of vertical stacking of horizontally polarized Yagi antennas?

G5A07

16. What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?

G2E07

17. What segment of the 80-meter band is most commonly used for digital transmissions?

G4A06

18. What type of device is often used to match transmitter output impedance to an impedance not equal to 50 ohms?

G1A14

19. Which of the following may apply in areas under FCC jurisdiction outside of ITU Region 2?

G5C07

20. What is the turns ratio of a transformer used to match an audio amplifier having 600 ohm output impedance to a speaker having 4 ohm impedance?

Figure

G7A10

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

G2B09

22. Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

G3A03

23. Approximately how long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio propagation on Earth?

G1C04

24. Which of the following limitations apply to transmitter power on every amateur band?

G2C07

25. When sending CW, what does a "C" mean when added to the RST report?

G2A11

26. Generally, who should respond to a station in the contiguous 48 states who calls "CQ DX"?

G1D10

27. What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

G9B10

28. What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

G4E09

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

G8A04

30. What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?

G4B03

31. Which of the following is the best instrument to use when checking the keying waveform of a CW transmitter?

G1B03

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

G3B02

33. What factors affect the MUF?

G5B05

34. How many watts are dissipated when a current of 7.0 milliamperes flows through a 1250 ohm resistance?

G0A10

35. What is one thing that can be done if evaluation shows that a neighbor might receive more than the allowable limit of RF exposure from the main lobe of a directional antenna?