General Exam-Missed Questions

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rledwith
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General Exam-Missed Questions
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2013-07-13 19:28:39
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Amateur Radio General Exam - G11 Question Set - Missed Questions
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  1. G2B10 [97.407(b)] When may the FCC restrict normal frequency operations of amateur stations participating in RACES?
    A. When they declare a temporary state of communication emergency
    B. When they seize your equipment for use in disaster communications
    C. Only when all amateur stations are instructed to stop transmitting
    D. When the President’s War Emergency Powers have been invoked
    (D)
  2. G3A05 What is the solar-flux index?
    A. A measure of the highest frequency that is useful for ionospheric propagation between two points on the Earth
    B. A count of sunspots which is adjusted for solar emissions
    C. Another name for the American sunspot number
    D. A measure of solar radiation at 10.7 cm
    (D)
  3. G2B07 Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?
    A. Check to see if the channel is assigned to another station
    B. Identify your station by transmitting your call sign at least 3 times
    C. Follow the voluntary band plan for the operating mode you intend to use
    D. All of these choices are correct
    (C)
  4. G4B13 What is a use for an antenna analyzer other than measuring the SWR of an antenna system?
    A. Measuring the front to back ratio of an antenna
    B. Measuring the turns ratio of a power transformer
    C. Determining the impedance of an unknown or unmarked coaxial cable
    D. Determining the gain of a directional antenna
    (C)
  5. G2D04 Which of the following describes an azimuthal projection map?
    A. A world map that shows accurate land masses
    B. A world map projection centered on a particular location
    C. A world map that shows the angle at which an amateur satellite crosses the equator
    D. A world map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit
    (B)
  6. G2E10 What is a major advantage of MFSK16 compared to other digital modes?
    A. It is much higher speed than RTTY
    B. It is much narrower bandwidth than most digital modes
    C. It has built-in error correction
    D. It offers good performance in weak signal environments without error correction
    (D)
  7. G3C06 What is a characteristic of HF scatter signals?
    A. They have high intelligibility
    B. They have a wavering sound
    C. They have very large swings in signal strength
    D. All of these choices are correct
    (B)
  8. G1C02 [97.313(a),(b)] What is the maximum transmitting power an amateur station may use on the 12 meter band?
    A. 1500 PEP output, except for 200 watts PEP output in the Novice portion
    B. 200 watts PEP output
    C. 1500 watts PEP output
    D. An effective radiated power equivalent to 50 watts from a half-wave dipole
    (C)
  9. G1D10 [97.509(b)(2)]What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?
    A. 12 years
    B. 18 years
    C. 21 years
    D. There is no age limit
    (B)
  10. G2D07 [97.303s] Which of the following is required by the FCC rules when operating in the 60 meter band?
    A. If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
    B. You must keep a log of the date, time, frequency, power level and stations worked
    C. You must keep a log of all third party traffic
    D. You must keep a log of the manufacturer of your equipment and the antenna used
    (A)
  11. G2E08 What segment of the 80 meter band is most commonly used for data transmissions?
    A. 3570 – 3600 kHz
    B. 3500 – 3525 kHz
    C. 3700 – 3750 kHz
    D. 3775 – 3825 kHz
    (A)
  12. G2D11 Which HF antenna would be the best to use for minimizing interference?
    A. A quarter-wave vertical antenna
    B. An isotropic antenna
    C. A unidirectional antenna
    D. An omnidirectional antenna
    (C)
  13. G2C04 What does it mean when a CW operator sends "CL" at the end of a transmission?
    A. Keep frequency clear
    B. Operating full break-in
    C. Listening only for a specific station or stations
    D. Closing station
    (D)
  14. G4A05 What is a purpose of using Automatic Level Control (ALC) with a RF power amplifier?
    A. To balance the transmitter audio frequency response
    B. To reduce harmonic radiation
    C. To reduce distortion due to excessive drive
    D. To increase overall efficiency
    (C)
  15. G9C10 Which of the following is a Yagi antenna design variable that could be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth?
    A. The physical length of the boom
    B. The number of elements on the boom
    C. The spacing of each element along the boom
    D. All of these choices are correct
    (D)
  16. G8A04 What emission is produced by a reactance modulator connected to an RF power amplifier?
    A. Multiplex modulation
    B. Phase modulation
    C. Amplitude modulation
    D. Pulse modulation
    (B)
  17. G9A06 In what values are RF feed line losses usually expressed?
    A. ohms per 1000 ft
    B. dB per 1000 ft
    C. ohms per 100 ft
    D. dB per 100 ft
    (D)
  18. G7C07 What is the simplest combination of stages that implement a superheterodyne receiver?
    A. RF amplifier, detector, audio amplifier
    B. RF amplifier, mixer, IF discriminator
    C. HF oscillator, mixer, detector
    D. HF oscillator, pre-scaler, audio amplifier
    (C)
  19. G0B03 Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?
    A. 100 amperes
    B. 60 amperes
    C. 30 amperes
    D. 15 amperes
    (D)
  20. G3A11 Approximately how long is the typical sunspot cycle?
    A. 8 minutes
    B. 40 hours
    C. 28 days
    D. 11 years
    (D)
  21. G2C11 What does the Q signal “QRV” mean?
    A. You are sending too fast
    B. There is interference on the frequency
    C. I am quitting for the day
    D. I am ready to receive messages
    (D)
  22. G3A12 What does the K-index indicate?
    A. The relative position of sunspots on the surface of the Sun
    B. The short term stability of the Earth’s magnetic field
    C. The stability of the Sun's magnetic field
    D. The solar radio flux at Boulder, Colorado
    (B)
  23. G5A05 How does an inductor react to AC?
    A. As the frequency of the applied AC increases, the reactance decreases
    B. As the amplitude of the applied AC increases, the reactance increases
    C. As the amplitude of the applied AC increases, the reactance decreases
    D. As the frequency of the applied AC increases, the reactance increases
    (D)
  24. G9C01 Which of the following would increase the bandwidth of a Yagi antenna?
    A. Larger diameter elements
    B. Closer element spacing
    C. Loading coils in series with the element
    D. Tapered-diameter elements
    (A)
  25. G8B07 What is the frequency deviation for a 12.21-MHz reactance-modulated oscillator in a 5-kHz deviation, 146.52-MHz FM-phone transmitter?
    A. 101.75 Hz
    B. 416.7 Hz
    C. 5 kHz
    D. 60 kHz
    (B)
  26. G8B04 What is the name of the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?
    A. Mixer
    B. Reactance modulator
    C. Pre-emphasis network
    D. Multiplier
    (D)
  27. G5B10 What percentage of power loss would result from a transmission line loss of 1 dB?
    A. 10.9%
    B. 12.2%
    C. 20.5%
    D. 25.9%
    (C)
  28. G3A08 Which of the following effects can a geomagnetic storm have on radio-wave propagation?
    A. Improved high-latitude HF propagation
    B. Degraded high-latitude HF propagation
    C. Improved ground-wave propagation
    D. Improved chances of UHF ducting
    (B)
  29. G6B09 Which of the following describes the construction of a MOSFET?
    A. The gate is formed by a back-biased junction
    B. The gate is separated from the channel with a thin insulating layer
    C. The source is separated from the drain by a thin insulating layer
    D. The source is formed by depositing metal on silicon
    (B)
  30. G7B07 What are the basic components of virtually all sine wave oscillators?
    A. An amplifier and a divider
    B. A frequency multiplier and a mixer
    C. A circulator and a filter operating in a feed-forward loop
    D. A filter and an amplifier operating in a feedback loop
    (D)
  31. G7A08 Which of the following is an advantage of a switch-mode power supply as compared to a linear power supply?
    A. Faster switching time makes higher output voltage possible
    B. Fewer circuit components are required
    C. High frequency operation allows the use of smaller components
    D. All of these choices are correct
    (C)
  32. G5C07 What is the turns ratio of a transformer used to match an audio amplifier having a 600-ohm output impedance to a speaker having a 4-ohm impedance?
    A. 12.2 to 1
    B. 24.4 to 1
    C. 150 to 1
    D. 300 to 1
    (A)
  33. G2B06 What is a practical way to avoid harmful interference when selecting a frequency to call CQ on CW or phone?
    A. Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
    B. Listen for 2 minutes before calling CQ
    C. Send the letter "V" in Morse code several times and listen for a response
    D. Send “QSY” on CW or if using phone, announce “the frequency is in use”, then send your call and listen for a response
    (A)
  34. G2B07 Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?
    A. Check to see if the channel is assigned to another station
    B. Identify your station by transmitting your call sign at least 3 times
    C. Follow the voluntary band plan for the operating mode you intend to use
    D. All of these choices are correct
    (C)
  35. G2B10 [97.407(b)] When may the FCC restrict normal frequency operations of amateur stations participating in RACES?
    A. When they declare a temporary state of communication emergency
    B. When they seize your equipment for use in disaster communications
    C. Only when all amateur stations are instructed to stop transmitting
    D. When the President’s War Emergency Powers have been invoked
    (D)
  36. G2C03 What does it mean when a CW operator sends "KN" at the end of a transmission?
    A. Listening for novice stations
    B. Operating full break-in
    C. Listening only for a specific station or stations
    D. Closing station now
    (C)
  37. G2C10 What does the Q signal "QRQ" mean?
    A. Slow down
    B. Send faster
    C. Zero beat my signal
    D. Quitting operation
    (B)
  38. G2C11 What does the Q signal “QRV” mean?
    A. You are sending too fast
    B. There is interference on the frequency
    C. I am quitting for the day
    D. I am ready to receive messages
    (D)
  39. G2E01 Which mode is normally used when sending an RTTY signal via AFSK with an SSB transmitter?
    A. USB
    B. DSB
    C. CW
    D. LSB
    (D)
  40. G3A03 Approximately how long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio-wave propagation on the Earth?
    A. 28 days
    B. 1 to 2 hours
    C. 8 minutes
    D. 20 to 40 hours
    (C)
  41. G3A04 Which of the following amateur radio HF frequencies are least reliable for long distance communications during periods of low solar activity?
    A. 3.5 MHz and lower
    B. 7 MHz
    C. 10 MHz
    D. 21 MHz and higher
    (D)
  42. G3A14 How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?
    A. HF communications are improved
    B. HF communications are disturbed
    C. VHF/UHF ducting is improved
    D. VHF/UHF ducting is disturbed
    • (B)
    • The corona is the Sun’s outer layer. Temperatures in the corona are typically about two million degrees Celsius, but can be more than four million degrees Celsius above an active sunspot region. A coronal hole is an area of somewhat lower temperature. Matter ejected through such a “hole” is in the form of plasma, a highly ionized gas made up of electrons, protons and neutral particles. The plasma travels at speeds up to two million miles per hour, and if the “jet” of material is directed toward the Earth it can result in a geomagnetic storm on Earth, disrupting HF communications.
  43. G3A15 How long does it take charged particles from coronal mass ejections to affect radio-wave propagation on the Earth?
    A. 28 days
    B. 14 days
    C. 4 to 8 minutes
    D. 20 to 40 hours
    • (D)
    • The corona is the Sun’s outer layer. Temperatures in the corona are typically about two million degrees Celsius, but can be more than four million degrees Celsius above an active sunspot region. Matter ejected from the corona is in the form of plasma, a highly ionized gas made up of electrons, protons and neutral particles. The plasma travels at speeds of two million miles per hour or more, so it can take about 20 to 40 hours for the plasma to travel the 93 million miles to Earth.
  44. G3B02 Which of the following is a good indicator of the possibility of sky-wave propagation on the 6 meter band?
    A. Short skip sky-wave propagation on the 10 meter band
    B. Long skip sky-wave propagation on the 10 meter band
    C. Severe attenuation of signals on the 10 meter band
    D. Long delayed echoes on the 10 meter band
    • (A)
    • As the maximum usable frequency (MUF) for a given path increases, the ionosphere also supports shorter single-hop distance at lower frequencies. Suppose you are operating on the 10 meter band, and are contacting stations that are 800 to 1000 miles away. After making a few more contacts you start to notice that you are contacting stations only about 500 miles away, and then you notice that you are contacting stations even closer, perhaps only out to a few hundred miles. This can be an excellent indication that the MUF for the longer-path stations has moved up to a higher frequency, perhaps even above 50 MHz. It is a good time to check for a band opening on 6 meters!
  45. G3B03 Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?
    A. Select a frequency just below the MUF
    B. Select a frequency just above the LUF
    C. Select a frequency just below the critical frequency
    D. Select a frequency just above the critical frequency
    • (A)
    • Ionospheric absorption (attenuation) is lowest just below the Maximum Usable Frequency (MUF), the highest frequency that will allow the radio wave to reach its desired destination using E or F-region propagation. Use a frequency just below the MUF for the highest received signal strength.
  46. G3C09 What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?
    A. Faraday rotation
    B. Scatter
    C. Sporadic-E skip
    D. Short-path skip
    • (B)
    • The area between the farthest reach of ground-wave propagation and the point where signals are refracted back from the ionosphere (sky-wave propagation) is called the skip zone. Since some of the transmitted signal is scattered in the atmosphere, communication may be possible in the skip zone by the use of scatter signals.
  47. G3C10 Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?
    A. The communication is during a sunspot maximum
    B. The communication is during a sudden ionospheric disturbance
    C. The signal is heard on a frequency below the Maximum Usable Frequency
    D. The signal is heard on a frequency above the Maximum Usable Frequency
    • (D)
    • Frequencies above the Maximum Usable Frequency (MUF) normally pass through the ionosphere out into space rather than being bent back, although atmospheric scatter from the ionosphere will sometimes allow communication on these frequencies. Amateurs trying to communicate on frequencies that seem to be above the MUF may notice that they can communicate using these scattered signals. Had they been using a frequency below the MUF they may not have noticed any scattered signals.
  48. G3C12 Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?
    A. The F2 layer
    B. The F1 layer
    C. The E layer
    D. The D layer
    • (D)
    • Think of the D region as the "Darned Daylight" region. Instead of bending high frequency signals back to Earth, it absorbs energy from them. Signals at lower frequencies (longer wavelengths such as 160, 80, 60 and 40 meters) are absorbed more than at higher frequencies. The ionization created by the sunlight does not last very long in the D region, disappearing by sunset.

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