Practice Exam

Element 4: Extra

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E6D05

1. What is one reason for using ferrite cores rather than powdered-iron in an inductor?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

Figure

E5C17

2. Which point on Figure E5-2 best represents the impedance of a series circuit consisting of a 300 ohm resistor, a 0.64-microhenry inductor and an 85-picofarad capacitor at 24.900 MHz?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E9C06

3. What is the effect of a terminating resistor on a rhombic antenna?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E7H09

4. What type of frequency synthesizer circuit uses a phase accumulator, lookup table, digital to analog converter, and a low-pass anti-alias filter?

E1D02

5. What is the amateur satellite service?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E1C04

6. What is meant by IARP?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E4D06

7. What is the term for unwanted signals generated by the mixing of two or more signals?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E2D12

8. How does JT65 improve EME communications?

E1B07

9. What is the highest modulation index permitted at the highest modulation frequency for angle modulation below 29.0 MHz?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E5D15

10. What is the power factor of an R-L circuit having a 45 degree phase angle between the voltage and the current?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E6B09

11. What is a common use for point contact diodes?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E4B05

12. If a frequency counter with a specified accuracy of +/- 10 ppm reads 146,520,000 Hz, what is the most the actual frequency being measured could differ from the reading?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E2B08

13. Which of the following is a common method of transmitting accompanying audio with amateur fast-scan television?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E3C11

14. What does VOACAP software model?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E4E14

15. What is one type of electrical interference that might be caused by the operation of a nearby personal computer?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E7C05

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

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E9D06

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

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E7F01

18. What is meant by direct digital conversion as applied to software defined radios?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E3B12

19. What is the primary characteristic of chordal hop propagation?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

Figure

E6C10

20. In Figure E6-5, what is the schematic symbol for a NOR gate?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E2A01

21. What is the direction of an ascending pass for an amateur satellite?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E4A10

22. Which of the following displays multiple digital signal states simultaneously?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E7E06

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

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

Figure

E7G10

24. What absolute voltage gain can be expected from the circuit in Figure E7-4 when R1 is 1800 ohms and RF is 68 kilohms?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E6E06

25. What characteristics of the MMIC make it a popular choice for VHF through microwave circuits?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E9E04

26. What is the purpose of the series capacitor in a gamma-type antenna matching network?

E1E10

27. What must the administering VEs do after the administration of a successful examination for an amateur operator license?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E8C04

28. What technique is used to minimize the bandwidth requirements of a PSK31 signal?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E8A05

29. What would be the most accurate way of measuring the RMS voltage of a complex waveform?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E7A11

30. What type of logic defines "1" as a high voltage?

E1F06

31. Under what circumstances might the FCC issue a Special Temporary Authority (STA) to an amateur station?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E5A14

32. What is the resonant frequency of a series RLC circuit if R is 22 ohms, L is 50 microhenrys and C is 40 picofarads?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E0A03

33. Which of the following would be a practical way to estimate whether the RF fields produced by an amateur radio station are within permissible MPE limits?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E7B03

34. Which of the following components form the output of a class D amplifier circuit?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E8B04

35. What is the modulation index of an FM-phone signal having a maximum carrier deviation of plus or minus 6 kHz when modulated with a 2 kHz modulating frequency?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E9B12

36. What is the far field of an antenna?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E8D09

37. What is considered a good minimum IMD level for an idling PSK signal?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E6A03

38. Why does a PN-junction diode not conduct current when reverse biased?

E1A08

39. 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?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E9G10

40. What do the arcs on a Smith chart represent?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E9A05

41. What is included in the total resistance of an antenna system?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E7D13

42. What is the equation for calculating power dissipation by a series connected linear voltage regulator?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E6F01

43. What is photoconductivity?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E9F04

44. What is the typical velocity factor for a coaxial cable with solid polyethylene dielectric?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E9H08

45. What is the function of a sense antenna?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E5B05

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

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E3A08

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

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E2E03

48. How is the timing of JT65 contacts organized?

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E4C12

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

Study material for this question can be found in the following resources:

Additional reference material is listed on my Study Materials page.

E2C12

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