Practice Exam

Element 3: General

G9C08

1. What is meant by the "main lobe" of a directive antenna?

G2B07

2. Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

G9A04

3. What causes reflected power at an antenna's feed point?

G8A07

4. Which of the following phone emissions uses the narrowest bandwidth?

G3B03

5. Which frequency will have the least attenuation for long-distance skip propagation?

G7C02

6. What output is produced by a balanced modulator?

G0A11

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

G6B01

8. What determines the performance of a ferrite core at different frequencies?

G1C11

9. What measurement is specified by FCC rules that regulate maximum power?

G1B02

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

G9D01

11. Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

G5C03

12. What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

G7B11

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

G8C02

14. Which digital mode is used as a low-power beacon for assessing HF propagation?

G4B04

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

G4D07

16. How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

G2A09

17. Why do most amateur stations use lower sideband on the 160-, 75-, and 40-meter bands?

G4E05

18. Which of the following most limits an HF mobile installation?

G6A05

19. What is the approximate forward threshold voltage of a silicon junction diode?

G2E05

20. What is the standard sideband for JT65, JT9, FT4, or FT8 digital signal when using AFSK?

G3A04

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

G0B02

22. According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?

G1D01

23. Who may receive partial credit for the elements represented by an expired amateur radio license?

G2C03

24. What does it mean when a CW operator sends "KN" at the end of a transmission?

G8B03

25. What is another term for the mixing of two RF signals?

G3C07

26. What makes HF scatter signals often sound distorted?

G1A03

27. On which of the following bands is image transmission prohibited?

G4C10

28. What could be a symptom caused by a ground loop in your station's audio connections?

G2D10

29. What is QRP operation?

G1E07

30. In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

G7A05

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

G4A05

32. Why is automatic level control (ALC) used with an RF power amplifier?

G5A04

33. Which of the following is opposition to the flow of alternating current in a capacitor?

G9B04

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

G5B01

35. What dB change represents a factor of two increase or decrease in power?