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Horn Antenna MCQs

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

Question 1
Antenna & Wave PropagationHorn Antenna

A horn antenna is commonly used at?

  • AMicrowave frequencies
  • BOnly audio frequencies
  • CDC only
  • DPower-line frequency only
Report an error
Correct Answer: A. Microwave frequencies
Explanation: Horn antennas are practical high-frequency aperture antennas widely used in microwave systems and as feeds for reflectors.
Reference: Standard antenna and wave propagation: horn antenna
Question 2
Antenna & Wave PropagationHorn Antenna

A major purpose of gradually flaring a waveguide into a horn is to?

  • AProvide a smoother transition from waveguide to free space
  • BCreate a DC short circuit
  • CStop all radiation
  • DIncrease conductor resistance intentionally
Report an error
Correct Answer: A. Provide a smoother transition from waveguide to free space
Explanation: The flare provides a gradual impedance transition and a larger radiating aperture, improving radiation into free space.
Reference: Standard antenna and wave propagation: horn antenna