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Dipole Antennas MCQs

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

Question 2
Antenna & Wave PropagationDipole Antennas

A vertically oriented half-wave dipole ideally produces what polarization in its broadside direction?

  • AVertical linear polarization
  • BHorizontal linear polarization
  • CCircular polarization automatically
  • DUnpolarized radiation
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Correct Answer: A. Vertical linear polarization
Explanation: The electric field of a thin dipole is oriented parallel to the dipole axis, giving vertical linear polarization for a vertical dipole.
Reference: Standard antenna and wave propagation: dipole antennas
Question 4
Antenna & Wave PropagationDipole Antennas

The radiation pattern of an ideal half-wave dipole has maximum radiation in directions?

  • AAlong the dipole axis
  • BPerpendicular to the dipole axis
  • COnly at 45 degrees to the axis
  • DEqually in every direction
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Correct Answer: B. Perpendicular to the dipole axis
Explanation: A thin half-wave dipole has maximum radiation broadside to its axis and nulls along the axis.
Reference: Standard antenna and wave propagation: dipole antennas
Question 6
Antenna & Wave PropagationDipole Antennas

The directivity of a half-wave dipole is approximately?

  • A1 or 0 dBi
  • B1.64 or 2.15 dBi
  • C3.28 or 5.16 dBi
  • D10 or 10 dBi
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Correct Answer: B. 1.64 or 2.15 dBi
Explanation: A half-wave dipole has maximum directivity about 1.64, corresponding to approximately 2.15 dBi.
Reference: Standard antenna and wave propagation: dipole antennas