Practice Exam

Element 4: Extra (New)

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E6F01

1. What absorbs the energy from light falling on a photovoltaic cell?

E9E05

2. What Yagi driven element feed point impedance is required to use a beta or hairpin matching system?

E1C01

3. What is the maximum bandwidth for a data emission on 60 meters?

E8A04

4. What is "dither" with respect to analog-to-digital converters?

E5B04

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

E4E05

6. What is used to suppress radio frequency interference from a line-driven AC motor?

E5A05

7. What is the result of increasing the Q of an impedance-matching circuit?

E1F04

8. Which of the following geographic descriptions approximately describes "Line A"?

E7G01

9. What is the typical output impedance of an op-amp?

E2E08

10. Which of the following HF digital modes can be used to transfer binary files?

E9F01

11. What is the velocity factor of a transmission line?

E0A01

12. What is the primary function of an external earth connection or ground rod?

E4C08

13. An SDR receiver is overloaded when input signals exceed what level?

E1A02

14. When using a transceiver that displays the carrier frequency of phone signals, which of the following displayed frequencies represents the lowest frequency at which a properly adjusted LSB emission will be totally within the band?

E5D10

15. As a conductor's diameter increases, what is the effect on its electrical length?

E9G08

16. How is a Smith chart normalized?

E7F13

17. What is the function of taps in a digital signal processing filter?

Figure

E5C12

18. Which point on Figure E5-1 best represents the impedance of a series circuit consisting of a 300-ohm resistor and a 19-picofarad capacitor at 21.200 MHz?

E3C02

19. What is indicated by a rising A-index or K-index?

E1B11

20. What does PRB-1 require of state and local regulations affecting amateur radio antenna size and structures?

E7E04

21. What is one way to produce a single-sideband phone signal?

E6E07

22. What type of transmission line is often used for connections to MMICs?

E9B08

23. What is the far field of an antenna?

E9D02

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

Figure

E7B11

25. In Figure E7-1, what is the purpose of R3?

Figure

E7D06

26. What is the purpose of Q1 in the circuit shown in Figure E7-2?

E6D09

27. What devices are commonly used as VHF and UHF parasitic suppressors at the input and output terminals of a transistor HF amplifier?

E1E07

28. What should a VE do if a candidate fails to comply with the examiner's instructions during an amateur operator license examination?

E2C07

29. What is the Cabrillo format?

E3A01

30. What is the approximate maximum separation measured along the surface of the Earth between two stations communicating by EME?

E7H08

31. Which of the following components can be used to reduce thermal drift in crystal oscillators?

E7C03

32. What is the purpose of adding an inductor to a Pi-network to create a Pi-L-network?

E2A06

33. What are Keplerian elements?

E2B03

34. How is an interlaced scanning pattern generated in a fast-scan (NTSC) television system?

Figure

E6A10

35. In Figure E6-1, which is the schematic symbol for an N-channel dual-gate MOSFET?

E2D10

36. What does the packet path WIDE3-1 designate?

E4D06

37. What is the term for the reduction in receiver sensitivity caused by a strong signal near the received frequency?

E9A11

38. Which of the following determines ground losses for a ground-mounted vertical antenna operating on HF?

E8D10

39. What are some of the differences between the Baudot digital code and ASCII?

E7A03

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

E4B07

41. What do the subscripts of S parameters represent?

E1D04

42. Which of the following is required in the identification transmissions from a balloon-borne telemetry station?

E8C15

43. What technique do individual nodes use to form a mesh network?

E6B01

44. What is the most useful characteristic of a Zener diode?

E4A07

45. Which of the following is an advantage of using an antenna analyzer compared to an SWR bridge?

E3B01

46. Where is transequatorial propagation (TEP) most likely to occur?

E8B05

47. What is the deviation ratio of an FM phone signal having a maximum frequency swing of plus or minus 5 kHz if the highest modulation frequency is 3 kHz?

E9C08

48. What is a folded dipole antenna?

E9H08

49. What is the function of a sense antenna?

E6C07

50. What best describes a pull-up or pull-down resistor?