Practice Exam

Element 3: General

G9B05

1. How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

G3B08

2. What does MUF stand for?

G6A06

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

G0A04

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

G8B10

5. What is the relationship between transmitted symbol rate and bandwidth?

G7C12

6. What is the frequency above which a low-pass filter's output power is less than half the input power?

G0B10

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

G1B10

8. What is the power limit for beacon stations?

G5A10

9. Which of the following devices can be used for impedance matching at radio frequencies?

G4B04

10. What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

G5C02

11. What is the output voltage if an input signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?

G2A03

12. Which mode is most commonly used for SSB voice communications in the VHF and UHF bands?

G1D08

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

G4E04

14. Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle's auxiliary power socket?

G1E04

15. Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

G2D06

16. How is a directional antenna pointed when making a "long-path" contact with another station?

G1C07

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

G9C03

18. How do the lengths of a three-element Yagi reflector and director compare to that of the driven element?

G1A09

19. Which of the following frequencies is within the General class portion of the 15-meter band?

G7B02

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

G2E12

21. Which of the following describes Winlink?

G2C11

22. What does the Q signal "QRV" mean?

G8A03

23. What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?

G5B07

24. What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

G6B11

25. What is an SMA connector?

G8C08

26. Which of the following statements is true about PSK31?

G2B11

27. How often may RACES training drills and tests be routinely conducted without special authorization?

G9A10

28. What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

G3A10

29. What causes HF propagation conditions to vary periodically in a 26- to 28-day cycle?

G9D10

30. In which direction or directions does an electrically small loop (less than 1/10 wavelength in circumference) have nulls in its radiation pattern?

G4D08

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

G4C07

32. Why should soldered joints not be used in lightning protection ground connections?

G3C07

33. What makes HF scatter signals often sound distorted?

Figure

G7A09

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

G4A11

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