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Communication S...

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  • Question 1
    4 / -1

    In a communication system, noise is most likely to affect the signal

  • Question 2
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    In a Fm system a 7 kHz signal modulates 108 MHz carrier so that frequency deviation is 50 kHz. The carrier swing is

  • Question 3
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    Consider telecommunication through optical fibres. Which of the following statements is not true?

  • Question 4
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    The phenomenon by which light travels in an optical fibres is

  • Question 5
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    Television signals on earth cannot be received at distances greater than 100 km from the transmission station. The reason behind this is that

  • Question 6
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    Advantage of optical fibre

  • Question 7
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    In ruby laser, the stimulated emission is due to transition from

  • Question 8
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    The fundamental radio antenna is a metal rod which has a length equal to

  • Question 9
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    When a low flying aircraft passes over head, we sometimes notice a slight shaking of the picture on our TV screen. This is due to

  • Question 10
    4 / -1

    When radio waves passes through ionosphere, phase difference between space current and capacitive displacement current is

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