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Principles of Communication: Satellite Communication MCQ

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Satellite CommunicationMediumQuestion 20257

Question

For a geostationary satellite, the time delay (round-trip propagation delay) for a signal to travel to the satellite and back is approximately:
  1. A
    0.024 s
  2. B
    0.24 s
    Correct
  3. C
    2.4 s
  4. D
    24 s

Correct answer

0.24 s

Explanation

Round-trip path: 2 × 36,000 km = 72,000 km = 7.2×10⁷ m. Time = d/c = 7.2×10⁷ / 3×10⁸ = 0.24 s. This 240 ms delay is noticeable in phone calls via satellite (total two-way: ~480 ms).

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