Practice Exam

Element 3: General

G4E10

1. What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?

G3A08

2. Which of the following effects can a geomagnetic storm have on radio propagation?

G1B05

3. Which of the following one-way transmissions are permitted?

G9B01

4. What is one disadvantage of a directly fed random-wire HF antenna?

G6A01

5. What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead-acid battery?

G8A09

6. What type of modulation is used by the FT8 digital mode?

G4D09

7. What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

G2C08

8. What prosign is sent to indicate the end of a formal message when using CW?

G8C13

9. What is indicated on a waterfall display by one or more vertical lines on either side of a digital signal?

G3C07

10. What makes HF scatter signals often sound distorted?

G9C02

11. What is the approximate length of the driven element of a Yagi antenna?

G4C09

12. How can a ground loop be avoided?

G1D09

13. How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

G2B04

14. When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

G9D04

15. What is the primary purpose of antenna traps?

G4A09

16. Why is a time delay sometimes included in a transmitter keying circuit?

G5B04

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

G1E01

18. Which of the following would disqualify a third party from participating in stating a message over an amateur station?

G7A07

19. What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

G3B04

20. What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

G5C03

21. Which of the following components increases the total resistance of a resistor?

G2E08

22. In what segment of the 20-meter band are most PSK31 operations commonly found?

G9A02

23. What are the typical characteristic impedances of coaxial cables used for antenna feed lines at amateur stations?

G8B12

24. What process combines two signals in a non-linear circuit or connection to produce unwanted spurious outputs?

G7B05

25. How many states does a 3-bit binary counter have?

G2D04

26. Which of the following describes an azimuthal projection map?

G6B04

27. What is meant by the term ROM?

G7C14

28. The bandwidth of a band-pass filter is measured between what two frequencies?

G0A03

29. How can you determine that your station complies with FCC RF exposure regulations?

G1A15

30. What portion of the 10-meter band is available for repeater use?

G0B04

31. Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?

G2A02

32. Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?

G4B12

33. What problem can occur when making measurements on an antenna system with an antenna analyzer?

G5A08

34. What is one reason to use an impedance matching transformer?

G1C11

35. What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?