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Solution - Need for Modulation and Demodulation

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Question

Why is base band signal not transmitted directly? Give any two reasons

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The process of regaining of information from carrier wave at the receiver is called .................

(a) modulation

(b) transmission

(c) propagation

(d) demodulation

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The power radiated by linear antenna of length T is proportional to........................

(λ= wavelength)

  1. `lambda/ l`
  2. `[lambda/l]^2`
  3. `l/lambda`
  4. `[l/lambda]^2`
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