Fcc Element 8-radar Endorsement

6 Questions | Total Attempts: 96

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Element Quizzes & Trivia

FCC Commercial Element 8 Question Pool (approved 25 June 2009) Subelement A – RADAR Principles – 10 Key Topics – 10 Exam Questions – 8 Drawings


Questions and Answers
  • 1. 
    8-6A4 If the RADAR unit has a pulse repetition frequency (PRF) of 2000 Hz and a pulse width of 0.05 microseconds, what is the duty cycle?
    • A. 

      0.0001

    • B. 

      0.0005

    • C. 

      0.05

    • D. 

      0.001

  • 2. 
    8-5A1 For a range of 5 nautical miles, the RADAR pulse repetition frequency should be:
    • A. 

      16.2 Hz or more.

    • B. 

      16.2 MHz or less.

    • C. 

      1.62 kHz or more.

    • D. 

      16.2 kHz or less.

  • 3. 
    8-39E5 How does antenna length affect the horizontal beamwidth of the transmitted signal?
    • A. 

      The longer the antenna the wider the horizontal beamwidth

    • B. 

      The longer the antenna the narrower the horizontal beamwidth.

    • C. 

      The horizontal beamwidth is not affected by the antenna length.

    • D. 

      None of the above.

  • 4. 
    8-4A1 A pulse RADAR has a pulse repetition frequency (PRF) of 400 Hz, a pulse width of 1 microsecond, and a peak power of 100 kilowatts. The average power of the RADAR transmitter is:
    • A. 

      25 watts.

    • B. 

      40 watts.

    • C. 

      250 watts

    • D. 

      400 watts.

  • 5. 
    8-47F3 Loss of distant targets during and immediately after wet weather indicates:
    • A. 

      A leak in waveguide or rotary joint.

    • B. 

      High atmospheric absorption.

    • C. 

      Dirt or soot on the rotary joint.

    • D. 

      High humidity in the transmitter causing power supply loading.

  • 6. 
    8-1A4 What RADAR component controls timing throughout the system?
    • A. 

      Power supply.

    • B. 

      Indicator.

    • C. 

      Synchronizer.

    • D. 

      Receiver.