Radio: Telecommunication Engineering Test! Trivia Questions Quiz

15 Questions | Total Attempts: 985

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Radio: Telecommunication Engineering Test! Trivia Questions Quiz

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Questions and Answers
  • 1. 
    The maximum power in AM,when modulation index is
    • A. 

      0

    • B. 

      0.5

    • C. 

      0.7

    • D. 

      1

  • 2. 
    AFC is
    • A. 

      Audio frequency control

    • B. 

      Automatic frequency control

    • C. 

      Amplitude frequency control

    • D. 

      None of these

  • 3. 
    Which one of the following is the type of ‘super heterodyning’?
    • A. 

      Radio transmitter

    • B. 

      TV

    • C. 

      Radio receiver

    • D. 

      Radar

  • 4. 
    An earth station transmitter consists of
    • A. 

      RF to IF down converter

    • B. 

      IF to RF converter

    • C. 

      Either (a)&(b)

    • D. 

      None of these

  • 5. 
    An earth station receiver consists of
    • A. 

      RF to IF down converter

    • B. 

      IFto RF converter

    • C. 

      Either (a)&(b)

    • D. 

      None of these

  • 6. 
    In optical communication, carrier is
    • A. 

      Electromagnetic waves in optical frequency

    • B. 

      Electromagnetic waves in maximum frequency

    • C. 

      Electromagnetic waves in minimum frequency

    • D. 

      None of these

  • 7. 
    Optical detector is
    • A. 

      diode

    • B. 

      PIN photo diode

    • C. 

      Transistor

    • D. 

      none of these

  • 8. 
    Video signals in TV are
    • A. 

      Amplitude modulated

    • B. 

      Phase modulated

    • C. 

      Frequency modulated

    • D. 

      None of these

  • 9. 
    In FM modulation ,when the modulation index increases, transmitted     power is
    • A. 

      Constant

    • B. 

      Increased

    • C. 

      Decreased

    • D. 

      None of these

  • 10. 
    In AM modulation ,when the modulation index increases, transmitted     power is
    • A. 

      constant

    • B. 

      increased

    • C. 

      decreased

    • D. 

      none of these

  • 11. 
    The bandwidth of the FM signal is_______than AM signal.
    • A. 

      Lesser

    • B. 

      Either lesser or larger

    • C. 

      Larger

    • D. 

      None of these

  • 12. 
    Messages travel from transmitter to receiver with help of
    • A. 

      Transmitter

    • B. 

      Receiver

    • C. 

      Channel

    • D. 

      antennas

  • 13. 
    In order to reduce interference, the signal should be
    • A. 

      Amplified

    • B. 

      Multiplied

    • C. 

      Demodulated

    • D. 

      Modulated

  • 14. 
    Non electric signal is converted into electrical signal by
    • A. 

      transducer

    • B. 

      Receiver

    • C. 

      Line

    • D. 

      None of these

  • 15. 
    The frequency range of 1GHZ to 30GHZ are referred as
    • A. 

      Sound waves

    • B. 

      Micro waves

    • C. 

      Mini waves

    • D. 

      None of these