Practice Exam

Element 3: General

G0B12

1. What is the purpose of a power supply interlock?

G6A08

2. What is an advantage of using a ferrite core toroidal inductor?

G4A05

3. What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

G2A10

4. Which of the following statements is true of voice VOX operation versus PTT operation?

G2E02

5. How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

G4C07

6. Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?

G1E09

7. Under what circumstances are messages that are sent via digital modes exempt from Part 97 third-party rules that apply to other modes of communication?

G9A11

8. What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 50 ohm impedance?

G6B08

9. How is an LED biased when emitting light?

G1B02

10. With which of the following conditions must beacon stations comply?

G5A05

11. How does an inductor react to AC?

G9C09

12. How does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?

G8A05

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

G5B09

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

G7C12

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

G9B04

16. What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

G2C04

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

G1A08

18. Which of the following frequencies is within the General class portion of the 80-meter band?

G4E11

19. Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?

G1D08

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

G4B07

21. What signals are used to conduct a two-tone test?

G9D11

22. Which of the following is a disadvantage of multiband antennas?

G7B11

23. For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

G2B09

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

G3C01

25. Which ionospheric layer is closest to the surface of Earth?

G5C11

26. What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?

G8B02

27. If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?

G8C03

28. What part of a packet radio frame contains the routing and handling information?

G0A09

29. What type of instrument can be used to accurately measure an RF field?

G1C13

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

G3A04

31. Which of the following are least reliable for long-distance communications during periods of low solar activity?

G2D11

32. Which of the following is typical of the lower HF frequencies during the summer?

G7A05

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

G4D05

34. How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

G3B06

35. What usually happens to radio waves with frequencies below the LUF?