Practice Exam

Element 3: General

G6B12

1. What is the primary purpose of a screen grid in a vacuum tube?

G4D02

2. Which of the following describes how a speech processor affects a transmitted single sideband phone signal?

G0A03

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

G4A09

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

G3B04

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

G3A08

6. Which of the following effects can a geomagnetic storm have on radio-wave propagation?

G5B04

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

G2B10

8. When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

G4C08

9. Which of the following would reduce RF interference caused by common-mode current on an audio cable?

G3C09

10. What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

G9B01

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

G1E10

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

G1C04

13. Which of the following is a limitation on transmitter power on the 14 MHz band?

G7C04

14. What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in a single-sideband receiver?

G7A03

15. What is the peak-inverse-voltage across the rectifiers in a full-wave bridge power supply?

G8A09

16. What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?

G2D02

17. Which of the following are objectives of the Amateur Auxiliary?

G6C12

18. Which of the following connectors would be a good choice for a serial data port?

G1B11

19. How does the FCC require an amateur station to be operated in all respects not specifically covered by the Part 97 rules?

G7B14

20. Which of the following describes a linear amplifier?

G2C10

21. What does the Q signal "QRQ" mean?

G4B10

22. Which of the following can be determined with a directional wattmeter?

G1D07

23. Volunteer Examiners are accredited by what organization?

G4E04

24. Why is it best NOT to draw the DC power for a 100-watt HF transceiver from an automobile's auxiliary power socket?

G9D01

25. What does the term "NVIS" mean as related to antennas?

G1A13

26. Which, if any, amateur band is shared with the Citizens Radio Service?

G0B01

27. Which wire or wires in a four-conductor line cord should be attached to fuses or circuit breakers in a device operated from a 240-VAC single-phase source?

G2E05

28. Which of the following describes Baudot code?

G5A08

29. Why is impedance matching important?

G8B10

30. What does the number 31 represent in PSK31?

G2A07

31. Which of the following statements is true of the single sideband (SSB) voice mode?

G5C04

32. What is the total resistance of three 100-ohm resistors in parallel?

G9A13

33. What would be the SWR if you feed an antenna that has a 300-ohm feed-point impedance with 50-ohm coaxial cable?

G6A01

34. Which of the following is an important characteristic for capacitors used to filter the DC output of a switching power supply?

G9C05

35. How does increasing boom length and adding directors affect a Yagi antenna?