Practice Exam

Element 4: Extra (EXPIRED)

E9H04

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

E6E01

2. What is a crystal lattice filter?

E1E09

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

E1F05

4. Amateur stations may not transmit in which of the following frequency segments if they are located in the contiguous 48 states and north of Line A?

E9G02

5. What type of coordinate system is used in a Smith chart?

E4B11

6. How should a portable antenna analyzer be connected when measuring antenna resonance and feed point impedance?

E8C05

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

E7C05

8. Which filter type is described as having ripple in the passband and a sharp cutoff?

E7G05

9. How can unwanted ringing and audio instability be prevented in a multi-section op-amp RC audio filter circuit?

E3A02

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

E7F10

11. What alternate method of determining frequency, other than by directly counting input pulses, is used by some counters?

E9A07

12. What is a folded dipole antenna?

E9C11

13. How is the far-field elevation pattern of a vertically polarized antenna affected by being mounted over seawater versus rocky ground?

E6B07

14. What is the failure mechanism when a junction diode fails due to excessive current?

E1D03

15. What is a telecommand station in the amateur satellite service?

E4D13

16. Which of the following can cause receiver desensitization?

E7B09

17. Which of the following describes how the loading and tuning capacitors are to be adjusted when tuning a vacuum tube RF power amplifier that employs a pi-network output circuit?

E6D11

18. How many turns will be required to produce a 1-mH inductor using a ferrite toroidal core that has an inductance index (A L) value of 523 millihenrys/1000 turns?

E7E04

19. What is one way a single-sideband phone signal can be generated?

E1B04

20. What must be done before placing an amateur station within an officially designated wilderness area or wildlife preserve, or an area listed in the National Register of Historical Places?

E6F10

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

E1C02

22. What is meant by automatic control of a station?

E2A11

23. What type of antenna can be used to minimize the effects of spin modulation and Faraday rotation?

E9B05

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

E5C09

25. When using rectangular coordinates to graph the impedance of a circuit, what does the horizontal axis represent?

E0A11

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

E3C10

27. How does the performance of a horizontally polarized antenna mounted on the side of a hill compare with the same antenna mounted on flat ground?

E8A04

28. What is equivalent to the root-mean-square value of an AC voltage?

E2E12

29. Which type of digital communication does not support keyboard-to-keyboard operation?

E2B13

30. How many lines are commonly used in each frame on an amateur slow-scan color television picture?

E6C02

31. What logic state do the inputs of a TTL device assume if they are left open?

E4A07

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

E7A11

33. What is the name for logic which represents a logic "1" as a high voltage?

Figure

E6A11

34. In Figure E6-2, what is the schematic symbol for a P-channel junction FET?

E8B06

35. 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?

E4E11

36. 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?

E2C10

37. Why might a DX station state that they are listening on another frequency?

E8D12

38. What is the peak voltage of a sinusoidal waveform if an RMS-reading voltmeter reads 34 volts?

E4C15

39. What is the primary source of noise that can be heard from an HF receiver with an antenna connected?

E5B11

40. What is the phase angle between the voltage across and the current through a series RLC circuit if XC is 25 ohms, R is 100 ohms, and XL is 50 ohms?

E9D15

41. Which of the following would provide the best RF ground for your station?

E9F07

42. How does ladder line compare to small-diameter coaxial cable such as RG-58 at 50 MHz?

E5A08

43. What is the phase relationship between the current through and the voltage across a series resonant circuit at resonance?

Figure

E7D06

44. What is the purpose of Q1 in the circuit shown in Figure E7-3?

E2D08

45. Which of the following types of packet frames is used to transmit APRS beacon data?

E5D05

46. Which of the following creates a magnetic field?

E7H15

47. Which of these functions can be performed by a phase-locked loop?

E9E02

48. What is the name of an antenna matching system that matches an unbalanced feed line to an antenna by feeding the driven element both at the center of the element and at a fraction of a wavelength to one side of center?

E3B10

49. What is the cause of gray-line propagation?

E1A02

50. 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?