Practice Exam

Element 4: Extra

Study material for this question can be found in the following resources:

E9C01

1. What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/2-wavelength apart and fed 180 degrees out of phase?

Study material for this question can be found in the following resources:

E4D09

2. What is the purpose of the preselector in a communications receiver?

Study material for this question can be found in the following resources:

E6E09

3. Which of the following component package types would be most suitable for use at frequencies above the HF range?

Study material for this question can be found in the following resources:

E5A15

4. Which of the following can increase Q for inductors and capacitors?

Study material for this question can be found in the following resources:

E2C08

5. Which of the following contacts may be confirmed through the U.S. QSL bureau system?

Study material for this question can be found in the following resources:

E4A11

6. Which of the following is good practice when using an oscilloscope probe?

Study material for this question can be found in the following resources:

E8B06

7. What is the deviation ratio of an FM-phone signal having a maximum frequency swing of plus or minus 7.5 kHz when the maximum modulation frequency is 3.5 kHz?

Study material for this question can be found in the following resources:

E7D14

8. What is one purpose of a "bleeder" resistor in a conventional unregulated power supply?

Study material for this question can be found in the following resources:

E7F04

9. What is a common method of generating an SSB signal using digital signal processing?

Study material for this question can be found in the following resources:

E6B13

10. What type of bias is required for an LED to emit light?

E1C09

11. Which of these ranges of frequencies is available for an automatically controlled repeater operating below 30 MHz?

Study material for this question can be found in the following resources:

E7C09

12. What is a Jones filter as used as part of an HF receiver IF stage?

Study material for this question can be found in the following resources:

E2B02

13. How many horizontal lines make up a fast-scan (NTSC) television frame?

Study material for this question can be found in the following resources:

E3B13

14. Why is chordal hop propagation desirable?

E1D08

15. Which VHF amateur service bands have frequencies available for space stations?

Study material for this question can be found in the following resources:

E3A03

16. When scheduling EME contacts, which of these conditions will generally result in the least path loss?

Study material for this question can be found in the following resources:

E2A08

17. Why should effective radiated power to a satellite which uses a linear transponder be limited?

Study material for this question can be found in the following resources:

E7A02

18. What is the function of a decade counter digital IC?

Study material for this question can be found in the following resources:

E9F11

19. What impedance does a 1/8 wavelength transmission line present to a generator when the line is open at the far end?

Study material for this question can be found in the following resources:

E7H02

20. Which describes a microphonic?

Study material for this question can be found in the following resources:

E4C04

21. How is the noise figure of a receiver defined?

Study material for this question can be found in the following resources:

E9H11

22. What characteristic of a cardioid pattern antenna is useful for direction finding?

Study material for this question can be found in the following resources:

E9A01

23. What describes an isotropic antenna?

E1E08

24. To which of the following examinees may a VE not administer an examination?

Study material for this question can be found in the following resources:
Figure

E7G11

25. What absolute voltage gain can be expected from the circuit in Figure E7-4 when R1 is 3300 ohms and RF is 47 kilohms?

Study material for this question can be found in the following resources:

E6C13

26. Which of the following is an advantage of BiCMOS logic?

Study material for this question can be found in the following resources:

E6D12

27. What is the definition of saturation in a ferrite core inductor?

E1F02

28. What privileges are authorized in the U.S. to persons holding an amateur service license granted by the Government of Canada?

E1A13

29. Who must be in physical control of the station apparatus of an amateur station aboard any vessel or craft that is documented or registered in the United States?

Study material for this question can be found in the following resources:

E9E07

30. What term best describes the interactions at the load end of a mismatched transmission line?

Study material for this question can be found in the following resources:

E2E10

31. Which of these digital modes has the narrowest bandwidth?

Study material for this question can be found in the following resources:

E2D09

32. Which of these digital modes has the fastest data throughput under clear communication conditions?

Study material for this question can be found in the following resources:

E5B04

33. What is the time constant of a circuit having two 220 microfarad capacitors and two 1 megohm resistors, all in parallel?

Study material for this question can be found in the following resources:

E4E15

34. Which of the following can cause shielded cables to radiate or receive interference?

Study material for this question can be found in the following resources:

E0A06

35. Why are there separate electric (E) and magnetic (H) field MPE limits?

E1B05

36. What is the National Radio Quiet Zone?

Study material for this question can be found in the following resources:

E6F07

37. What is a solid state relay?

Study material for this question can be found in the following resources:

E5C05

38. What is the name of the diagram used to show the phase relationship between impedances at a given frequency?

Study material for this question can be found in the following resources:
Figure

E9B02

39. In the antenna radiation pattern shown in Figure E9-1, what is the front-to-back ratio?

Study material for this question can be found in the following resources:

E8C05

40. What is the necessary bandwidth of a 13-WPM international Morse code transmission?

Study material for this question can be found in the following resources:

E5D01

41. What is the result of skin effect?

Study material for this question can be found in the following resources:

E9G10

42. What do the arcs on a Smith chart represent?

Study material for this question can be found in the following resources:

E9D02

43. How can linearly polarized Yagi antennas be used to produce circular polarization?

Study material for this question can be found in the following resources:

E8A11

44. What type of information can be conveyed using digital waveforms?

Study material for this question can be found in the following resources:

E6A12

45. Why do many MOSFET devices have internally connected Zener diodes on the gates?

Study material for this question can be found in the following resources:
Figure

E7B10

46. In Figure E7-1, what is the purpose of R1 and R2?

Study material for this question can be found in the following resources:

E7E10

47. How does a diode detector function?

Study material for this question can be found in the following resources:

E4B14

48. What happens if a dip meter is too tightly coupled to a tuned circuit being checked?

Study material for this question can be found in the following resources:

E8D09

49. What is considered a good minimum IMD level for an idling PSK signal?

Study material for this question can be found in the following resources:

E3C01

50. What does the term ray tracing describe in regard to radio communications?