Practice Exam

Element 4: Extra (EXPIRED)

E9A11

1. Which of the following choices is a way to improve the efficiency of a ground-mounted quarter-wave vertical antenna?

E2E05

2. How does ARQ accomplish error correction?

E1C07

3. What is meant by local control?

E9B05

4. What usually occurs if a Yagi antenna is designed solely for maximum forward gain?

E2C07

5. What is the Cabrillo format?

E4D03

6. How can intermodulation interference between two repeaters occur?

Figure

E9C08

7. What is the elevation angle of peak response in the antenna radiation pattern shown in Figure E9-2?

E8A01

8. What type of wave is made up of a sine wave plus all of its odd harmonics?

E7E03

9. How does an analog phase modulator function?

E7F05

10. Which of the following is a technique for providing high stability oscillators needed for microwave transmission and reception?

E1A02

11. 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?

E1D05

12. What class of licensee is authorized to be the control operator of a space station?

E2D07

13. Which of the following digital protocols is used by APRS?

E7B03

14. Which of the following forms the output of a class D amplifier circuit?

E2A13

15. What type of satellite appears to stay in one position in the sky?

E6C05

16. Which of the following is an advantage of CMOS logic devices over TTL devices?

E8B10

17. Which of these methods can be used to combine several separate analog information streams into a single analog radio frequency signal?

E4B12

18. What is the significance of voltmeter sensitivity expressed in ohms per volt?

E0A11

19. Which of the following injuries can result from using high-power UHF or microwave transmitters?

E1E09

20. What may be the penalty for a VE who fraudulently administers or certifies an examination?

E5A15

21. What is the resonant frequency of a series RLC circuit if R is 56 ohms, L is 40 microhenrys and C is 200 picofarads?

E1F03

22. Under what circumstances may a dealer sell an external RF power amplifier capable of operation below 144 MHz if it has not been granted FCC certification?

E6E03

23. What is one aspect of the piezoelectric effect?

E5D01

24. What is the result of skin effect?

E5B13

25. What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 250 ohms, R is 1 kilohm, and XL is 500 ohms?

E6F09

26. What is the efficiency of a photovoltaic cell?

E5C05

27. In polar coordinates, what is the impedance of a network consisting of a 400-ohm-reactance inductor in parallel with a 300-ohm resistor?

E3C09

28. Which of the following is usually responsible for causing VHF signals to propagate for hundreds of miles?

E3B08

29. What type of HF propagation is probably occurring if radio signals travel along the terminator between daylight and darkness?

E4E06

30. What is a major cause of atmospheric static?

E7D05

31. Which of the following types of linear voltage regulator places a constant load on the unregulated voltage source?

E4C12

32. What is an undesirable effect of using too wide a filter bandwidth in the IF section of a receiver?

E4A06

33. Which of the following could be determined with a spectrum analyzer?

E9F12

34. What impedance does a 1/4-wavelength transmission line present to a generator when the line is open at the far end?

E7C10

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

E6B02

36. What is an important characteristic of a Schottky diode as compared to an ordinary silicon diode when used as a power supply rectifier?

E9H04

37. What term describes station output, including the transmitter, antenna and everything in between, when considering transmitter power and system gains and losses?

E7A05

38. Which of the following is a circuit that continuously alternates between two states without an external clock?

E2B14

39. What aspect of an amateur slow-scan television signal encodes the brightness of the picture?

E9G01

40. Which of the following can be calculated using a Smith chart?

E9D11

41. What is the function of a loading coil as used with an HF mobile antenna?

E6A14

42. How does DC input impedance at the gate of a field-effect transistor compare with the DC input impedance of a bipolar transistor?

E7H01

43. What are three oscillator circuits used in Amateur Radio equipment?

E8C12

44. What is the advantage of including a parity bit with an ASCII character stream?

E1B07

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

E6D13

46. What type of CRT deflection is better when high-frequency waveforms are to be displayed on the screen?

E7G13

47. What is meant by the term op-amp input-offset voltage?

E3A08

48. When a meteor strikes the Earth's atmosphere, a cylindrical region of free electrons is formed at what layer of the ionosphere?

E9E03

49. What is the name of the matching system that uses a section of transmission line connected in parallel with the feed line at the feed point?

E8D09

50. What is meant by circularly polarized electromagnetic waves?