Electromagnetic theory miscellaneous


Electromagnetic theory miscellaneous

Electromagnetic Theory

  1. Indicate which of the following frequencies cannot be used for reliable beyond the horizon terrestrial communications without repeaters?









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    NA

    Correct Option: D

    NA


  1. Indicate which of the following frequencies cannot be used for reliable beyond the horizon terrestrial communications without repeaters?









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    NA

    Correct Option: D

    NA



  1. VLF waves are used for some types of services because—









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    VLF waves are used for some types of services because they are very reliable.

    Correct Option: C

    VLF waves are used for some types of services because they are very reliable.


  1. Indicate which one of the following terms applies to troposcatter propagation—









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    NA

    Correct Option: B

    NA



  1. To couple a coaxial line to a parallel-wire line, it is best to use a—









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    NA

    Correct Option: B

    NA