Communication Systems
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Refractive index of ionosphere is
  • zero   
  • more than one
  • less than one
  • one

C.

less than one
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    Given alongside is the circuit diagram of an AM demodulator. For good demodulation of AM signal of carrier frequency f, the value of RC should be
    • RC = 1/f
    • RC < 1/f
    • RC ≥ 1/f
    • RC >> 1/f
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