Practice Exam

Element 4: Extra (EXPIRED)

E1B10

1. What frequencies are authorized to an amateur station participating in RACES?

E7A15

2. What is a D flip-flop?

E8B09

3. What is meant by deviation ratio?

E8C13

4. What is one advantage of using JT-65 coding?

E1F03

5. 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?

E9E05

6. How must the driven element in a 3-element Yagi be tuned to use a hairpin matching system?

E3C12

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

E6C05

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

E9D08

9. What happens to the bandwidth of an antenna as it is shortened through the use of loading coils?

E4C11

10. Which of the following is a desirable amount of selectivity for an amateur SSB phone receiver?

E2B07

11. What is the name of the signal component that carries color information in NTSC video?

E5C12

12. If you plot the impedance of a circuit using the rectangular coordinate system and find the impedance point falls on the right side of the graph on the horizontal axis, what do you know about the circuit?

E8A09

13. What type of waveform is produced by human speech?

E0A06

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

E7E05

15. What circuit is added to an FM transmitter to boost the higher audio frequencies?

E7F04

16. What additional circuitry must be added to a 100-kHz crystal-controlled marker generator so as to provide markers at 50 and 25 kHz?

E9C02

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

E7B21

18. Which of the following devices is generally best suited for UHF or microwave power amplifier applications?

E9B04

19. What may occur when a directional antenna is operated at different frequencies within the band for which it was designed?

E6A16

20. What are the majority charge carriers in N-type semiconductor material?

E7H18

21. What are the major spectral impurity components of phase-locked loop synthesizers?

E3A02

22. What characterizes libration fading of an Earth-Moon-Earth signal?

E6F12

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

E5B06

24. How long does it take for an initial charge of 800 V DC to decrease to 294 V DC in a 450-microfarad capacitor when a 1-megohm resistor is connected across it?

E9A14

25. How much gain does an antenna have compared to a 1/2-wavelength dipole when it has 12 dB gain over an isotropic antenna?

Figure

E7D11

26. What is the purpose of R1 in the circuit shown in Figure E7-3?

E9F05

27. What is the approximate physical length of a solid polyethylene dielectric coaxial transmission line that is electrically one-quarter wavelength long at 14.1 MHz?

E1C09

28. Which of these frequencies are available for an automatically controlled repeater operating below 30 MHz?

E6E07

29. Which of the following techniques is typically used to construct a MMIC-based microwave amplifier?

E6D10

30. What is a primary advantage of using a toroidal core instead of a solenoidal core in an inductor?

E5A05

31. What is the magnitude of the current at the input of a series RLC circuit as the frequency goes through resonance?

E2C12

32. What might help to restore contact when DX signals become too weak to copy across an entire HF band a few hours after sunset?

E7C02

33. A T-network with series capacitors and a parallel shunt inductor has which of the following properties?

E2A13

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

E5D10

35. How can the true power be determined in an AC circuit where the voltage and current are out of phase?

E1D11

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

E9G04

37. What are the two families of circles and arcs that make up a Smith chart?

E4B03

38. If a frequency counter with a specified accuracy of +/- 1.0 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading?

E4A11

39. Which of these instruments could be used for detailed analysis of digital signals?

E1E07

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

E7G12

41. What is an integrated circuit operational amplifier?

E4D01

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

Figure

E6B10

43. In Figure E6-3, what is the schematic symbol for a light-emitting diode?

E9H10

44. How can the output voltage of a multi-turn receiving loop antenna be increased?

E2D04

45. What is the purpose of digital store-and-forward functions on an Amateur Radio satellite?

E2E10

46. Which of these digital communications modes has the narrowest bandwidth?

E3B06

47. Which of the following amateur bands most frequently provides long-path propagation?

E8D04

48. What is the PEP output of a transmitter that develops a peak voltage of 30 volts into a 50-ohm load?

E1A08

49. If a station in a message forwarding system inadvertently forwards a message that is in violation of FCC rules, who is primarily accountable for the rules violation?

E4E11

50. Which of the following is the most likely cause if you are hearing combinations of local AM broadcast signals within one or more of the MF or HF ham bands?