Friis Numericals MCQs

Practice Friis Numericals MCQs with four options, answers and explanations for focused Electronics & Telecommunication Engineering revision.

Question 1

Antenna & Wave PropagationFriis Numericals

For two isotropic antennas in ideal free space, the Friis power ratio Pr/Pt is?

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Correct Answer: A. (lambda/(4 pi R))²

Explanation: With unity antenna gains, Friis gives Pr/Pt=(λ/(4πR))².

Reference: Standard antenna and wave propagation: friis numericals

Question 2

Antenna & Wave PropagationFriis Numericals

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Correct Answer: A. 6.33×10^-7

Explanation: (1/(4π×100))²≈6.33×10^-7.

Reference: Standard antenna and wave propagation: friis numericals