Practice Exam

Element 4: Extra

E5C07

1. Where is the impedance of a pure resistance plotted on rectangular coordinates?

E3A04

2. What do Hepburn maps predict?

E6B08

3. Which of the following is a Schottky barrier diode?

E2B01

4. How many times per second is a new frame transmitted in a fast-scan (NTSC) television system?

E8A06

5. What is the approximate ratio of PEP-to-average power in a typical single-sideband phone signal?

E6E09

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

E9D03

7. Where should a high Q loading coil be placed to minimize losses in a shortened vertical antenna?

E7E06

8. Why is de-emphasis commonly used in FM communications receivers?

E9H05

9. What is the main drawback of a small wire-loop antenna for direction finding?

E8C09

10. Which digital code allows only one bit to change between sequential code values?

E6D12

11. What is inductor saturation?

E7B06

12. Which of the following amplifier types reduces even-order harmonics?

E5B05

13. What happens to the magnitude of a pure reactance when it is converted to a susceptance?

E9A09

14. What is antenna efficiency?

E7D11

15. What is the function of the pass transistor in a linear voltage regulator circuit?

E4C05

16. What does a receiver noise floor of -174 dBm represent?

E1A06

17. Where must the carrier frequency of a CW signal be set to comply with FCC rules for 60 meter operation?

E9G11

18. How are the wavelength scales on a Smith chart calibrated?

E2E03

19. How is the timing of FT4 contacts organized?

E9F02

20. Which of the following has the biggest effect on the velocity factor of a transmission line?

E0A04

21. When evaluating a site with multiple transmitters operating at the same time, the operators and licensees of which transmitters are responsible for mitigating over-exposure situations?

E7C10

22. Which of the following filters would be the best choice for use in a 2 meter band repeater duplexer?

E2C03

23. From which of the following bands is amateur radio contesting generally excluded?

E8D08

24. What parameter evaluates distortion of an AFSK signal caused by excessive input audio levels?

E2A06

25. What are Keplerian elements?

E9C02

26. What is the radiation pattern of two 1/4-wavelength vertical antennas spaced 1/4-wavelength apart and fed 90 degrees out of phase?

E7F05

27. How frequently must an analog signal be sampled by an analog-to-digital converter so that the signal can be accurately reproduced?

E2D07

28. What digital protocol is used by APRS?

E1F01

29. On what frequencies are spread spectrum transmissions permitted?

E9E07

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

E3C12

31. How does the maximum range of ground-wave propagation change when the signal frequency is increased?

Figure

E9B04

32. What is the front-to-back ratio of the radiation pattern shown in Figure E9-2?

E3B03

33. What is the best time of day for transequatorial propagation?

E1C07

34. At what level below a signal's mean power level is its bandwidth determined according to FCC rules?

E7G06

35. What is the gain-bandwidth of an operational amplifier?

E6A09

36. What is a depletion-mode FET?

E1B05

37. What is the National Radio Quiet Zone?

E1E11

38. What must the VE team do if an examinee scores a passing grade on all examination elements needed for an upgrade or new license?

E4B01

39. Which of the following factors most affects the accuracy of a frequency counter?

E4E08

40. What current flows equally on all conductors of an unshielded multi-conductor cable?

E4A01

41. Which of the following limits the highest frequency signal that can be accurately displayed on a digital oscilloscope?

E7A03

42. Which of the following can divide the frequency of a pulse train by 2?

E5D12

43. How many watts are consumed in a circuit having a power factor of 0.2 if the input is 100 VAC at 4 amperes?

E7H03

44. How is positive feedback supplied in a Hartley oscillator?

E1D11

45. Which amateur stations are eligible to operate as Earth stations?

E8B11

46. What is digital time division multiplexing?

E6F10

47. What is the most common type of photovoltaic cell used for electrical power generation?

E5A09

48. How is the Q of an RLC parallel resonant circuit calculated?

E6C05

49. What is an advantage of CMOS logic devices over TTL devices?

E4D01

50. What is meant by the blocking dynamic range of a receiver?