Practice Exam

Element 4: Extra

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

E9E07

1. What term best describes the interactions at the load end of a mismatched transmission line?

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

E8B04

2. 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:

E9H08

3. What is the function of a sense antenna?

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

E9G08

4. What is the process of normalization with regard to a Smith chart?

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

E0A03

5. 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?

E1C11

6. Which of the following operating arrangements allows an FCC-licensed U.S. citizen to operate in many European countries, and alien amateurs from many European countries to operate in the U.S.?

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

E6D07

7. What is the usable frequency range of inductors that use toroidal cores, assuming a correct selection of core material for the frequency being used?

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

E6F03

8. What is the most common configuration of an optoisolator or optocoupler?

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

E6E12

9. Why are high-power RF amplifier ICs and transistors sometimes mounted in ceramic packages?

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

E7D11

10. What circuit element is controlled by a series analog voltage regulator to maintain a constant output voltage?

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

E9A14

11. What is meant by the radiation resistance of an antenna?

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

E3C08

12. What does the space weather term G5 mean?

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

E5C12

13. 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?

E1A03

14. With your transceiver displaying the carrier frequency of phone signals, you hear a station calling CQ on 14.349 MHz USB. Is it legal to return the call using upper sideband on the same frequency?

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

E5B03

15. What happens to the phase angle of a reactance when it is converted to a susceptance?

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

E3A17

16. What is meant by circularly polarized electromagnetic waves?

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

E5A11

17. What is the half-power bandwidth of a parallel resonant circuit that has a resonant frequency of 7.1 MHz and a Q of 150?

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

E2C09

18. What type of equipment is commonly used to implement a ham radio mesh network?

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

E4E07

19. How can you determine if line noise interference is being generated within your home?

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

E7C14

20. Which mode is most affected by non-linear phase response in a receiver IF filter?

E1F10

21. What is the maximum permitted transmitter peak envelope power for an amateur station transmitting spread spectrum communications?

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

E4C02

22. Which of the following portions of a receiver can be effective in eliminating image signal interference?

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

E2D14

23. What is one advantage of using JT65 coding?

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

E8C03

24. When performing phase shift keying, why is it advantageous to shift phase precisely at the zero crossing of the RF carrier?

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

E8A02

25. What type of wave has a rise time significantly faster than its fall time (or vice versa)?

E1E10

26. 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:

E4B16

27. Which S parameter represents return loss or SWR?

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

E4D06

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

E1D02

29. What is the amateur satellite service?

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

E9C06

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

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

E7H07

31. How can an oscillator's microphonic responses be reduced?

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

E4A13

32. How is the compensation of an oscilloscope probe typically adjusted?

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

E6C01

33. What is the function of hysteresis in a comparator?

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

E9D02

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

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

E9B12

35. What is the far field of an antenna?

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

E7G11

36. What absolute voltage gain can be expected from the circuit in Figure E7-4 when R1 is 3300 ohms and RF is 47 kilohms?

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

E5D13

37. How much power is consumed in a circuit consisting of a 100 ohm resistor in series with a 100 ohm inductive reactance drawing 1 ampere?

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

E6A15

38. Which semiconductor material contains excess holes in the outer shell of electrons?

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

E6B13

39. What type of bias is required for an LED to emit light?

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

E7E09

40. What occurs when an excessive amount of signal energy reaches a mixer circuit?

E1B02

41. Which of the following factors might cause the physical location of an amateur station apparatus or antenna structure to be restricted?

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

E9F07

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

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

E7A05

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

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

E7B04

44. Where on the load line of a Class A common emitter amplifier would bias normally be set?

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

E2A05

45. What do the letters in a satellite's mode designator specify?

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

E8D01

46. Why are received spread spectrum signals resistant to interference?

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

E7F13

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

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

E2B02

48. How many horizontal lines make up a fast-scan (NTSC) television frame?

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

E2E08

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

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

E3B05

50. Which amateur bands typically support long-path propagation?